A massive vessel looms over a sprawling alien metropolis and fires a Wave-Motion Gun. Rather than destroying the city, it appears to be erased from existence and a verdant forest takes its place. The captain of the ship asks for a status report, and is told they did not achieve their goal. Since it was a colony, their new target to eradicate the species homeworld.

Voyager comes into Krenim territory and accosted by a territorial but underpowered ship demanding they turn around. Janeway is amused and prepared to step around. Annorax, the captain of the ship in the beginning, has made new calculations and a temporal wave passes through the sector. The Krenim ship is enlarged and Voyager has lingering damage from repeated attacks, with Janeway commenting on dealing with this for weeks. This new ship has strange torpedoes that is out of sync with time itself, bypassing their shields. They fend off the attack and continue on. Months go by and the damage to Voyager is only accumulating with numerous casualties. Morale is low and Janeway is taking the burden personally. After a lot of trial and error they finally determine a method of blocking the temporal torpedoes, and once they have a defense the enemy ship is confused on what to do next.

Annorax is still searching for a perfect solution to his problem and sets out for yet another target. But the results are regressive as Voyager's temporal shielding destroys all their calculations. Now Voyager is a nuisance in the path of their mission, and they try to destroy them. Chakotay and Paris are beamed to the timeship for record keeping and they set to erase Voyager from existence. Voyager escapes at warp speed, but with gaps in their shield it causes significant damage to the hull. Janeway is forced to have the crew Abandon Ship while the senior officers remain as a skeleton crew.

Chakotay and Paris are given a tour of the timeship. Annorax is trying to restore a Krenim colony lost in his first attempts at manipulating time, and bring back his wife. Faced with what it can do Chakotay starts questioning if they could avoid this whole issue by altering time so Voyager never passed through Krenim space to start with. Paris comments that he's been corrupted by Annorax, while also learning his crew have become jaded to the mission as well.

Janeway has acquired some allies against Annorax and they set about for a final confrontation. The timeship is immune to conventional weapons, but the crew has had enough and sabotage it to bring it back to normal time. Janeway navigates Voyager to collide with the timeship, betting that destroying it will restore proper history. "Time's Up!"

Back to Day One, Voyager is met with a Krenim ship who politely advises to go around the territory due to some conflicts, which Janeway respects.

Annorax is back on his home colony. He is hard at work with a project but his wife asks him to spend time with her. He leaves his desk to be with her, but a datapad shows new time calculations.

This two-part episode provides examples of

• 2-D Space: Averted with the creation of the Astrometrics lab, so Voyager's course no longer has to be represented on flat screens. Annorax's vessel plays the trope straight.
• A Million Is a Statistic: Annorax and his crew are willing to erase billions of people from existence, simply to get a few percentage points closer to their ideal timeline.
• Abandon Ship: Averted at first; Chakotay suggests they abandon Voyager and use the shuttles to sneak through Krenim space. Janeway refuses to consider the idea until the cliffhanger end of Part One.
  "I’m not breaking up the family, Chakotay. We’re stronger as a team — one crew, one ship."
• Achievements in Ignorance: The temporal shields make Voyager immune to the changes caused by the Timeship when the crew didn't even know that was a threat they needed to be protected from (unfortunately, the temporal shield also prevents the damage to Voyager and her crew from being "healed" by the temporal changes).
• Affably Evil: Annorax is courteous to the crew, and is so eloquent in his arguments that even Chakotay is swayed into believing he can be reasoned with. His courtesies are genuine, but he's also long since been driven insane by his obsession with restoring his lost family, and it soon becomes clear that he has to be stopped.
• Affectionate Gesture to the Head: When saying goodbye to a blind Tuvok, Janeway cups his face in both hands.
• And Then What?:
  • Brought up by Janeway when the Doctor tries to relieve her of duty due to her potential PTSD, as she forces him to acknowledge that the ship doesn’t have the resources to keep her confined even if they would go through with that order.
  • Janeway also asks this when Chakotay first suggests the idea of abandoning the ship - sure, a bunch of escape pods and shuttles could probably sneak through Krenim space much easier than the starship itself, but those pods and shuttles would have a distinct disadvantage with no weapons and shields, and, even if they did make it through to the other side, what would they do without Voyager's resources going forward in their journey home? Even Chakotay acknowledges that he didn't like the idea, but he had a duty to suggest it all the same.
• Anti-Villain: Ruthless though he may be, if there was any genuine malice in Annorax's actions, it's long gone by the time he encounters Voyager; all he really cares about is restoring the Krenim Imperium and especially his own family after he inadvertently destroyed them.
• Anyone Can Die: Surprisingly averted despite the inbuilt Reset Button, and the alternate timeline of "Before And After" in which both Janeway and B'Elanna were killed during the Year of Hell. At most, two Nihydron vessels are erased during the climactic battle, but it's unclear whether the two crewmembers (B'Elanna and Harry) assigned to work with the Nihydron are actually on-board those ships.
• Apologetic Attacker: Annorax has the grace to apologize before trying to wipe Voyager from existence.
• The Artifact: Seven is unusually compassionate to Tuvok, especially when he becomes blind, which contrasts to her in the rest of the series being rather uncaring with the crew and having little interaction with Tuvok. Originally this was going to be Kes, who was known for her compassion and did have a bond with Tuvok.
• Artistic License – Ships: Contrary to what Paris seems to think, compartmentalizing a ship via transverse bulkheads did not originate with the Titanic, having been invented in China in the 5th century AD and having become near-universal in Western ships as well a century before Titanic. It's also ridiculous that Starfleet vessels wouldn't already have such compartmentalization.
• Attack Pattern Alpha: In this case, Janeway orders Attack Pattern Omega.
• Beard of Sorrow: Chakotay gets pretty scruffy on the damaged Voyager.
• Beauty Equals Goodness: Inverted with the Krenim and the Zahl—the latter look less like humans but are friendlier to Voyager.
• Beauty Is Never Tarnished: Averted when Janeway gets a severe burn scar on one side of her face, though strangely her famous red hair is unsinged. Meanwhile Seven's face is pristine as always.
• A Birthday, Not a Break: Janeway's birthday means little on a half-destroyed ship.
• Bomb Disposal: Seven finds an unexploded chronoton torpedo lodged in the hull. She can't defuse it as it's about to explode, but she can scan it for the exact temporal variance which will enable them to create effective shields.
• Bookends: The two-parter started with Voyager coming across an aggressive but underpowered Krenim ship trying to bully Voyager while lacking any sort of weaponry to back it up. After Annorax restores most of the Krenim Imperium, the timeline shift has Voyager being pounded on by a much more powerful ship, and the same commander is now a full-on Jerkass who casually threatens to have the crew executed, with Janeway commenting that they have been dealing with these attacks for weeks now. After the timeship is destroyed the timeline resets to Day One where Voyager comes across the original, smaller Krenim ship, whose commander is now much more reasonable and politely requests that they divert around the area, which Janeway agrees to do.
• The Bore: The Doctor insists on giving a speech at the opening of the Astrometrics Lab, despite the ill-concealed impatience of his fellow crew, who take the first excuse available to leave the room en masse.
• Brutal Honesty: Janeway says they need to leave the nebula before their repairs are complete. Only Seven voices what everyone's thinking, and is told off for it later by Tuvok.
  Seven: As a Borg, I submitted to a single authority: the Collective. Over the past several months I've been encouraged to think and act as an individual. It is difficult to know when to restrain myself.
  Tuvok: Remember this guideline. The Captain is always right.
  Seven: Even when you know her logic is flawed?
  Tuvok: (Beat) Perhaps...
• Bullying a Dragon: Subverted; a fifteen-man, lightly-armed Krenim vessel makes a pathetic attempt to scare off Voyager... until a time shift turns it into a powerful warship with torpedoes that can pass right through their shields.
• Butterfly of Doom: Another fine example of how one man's repeated attempts at changing the past to find the "perfect" timeline he accidently erased leading to ever more disastrous consequences. Things are spiraling out of control, precisely because the timeship is based on the idea of Laplace's Demon which is contradicted by both Quantum Mechanics and Chaos Theory.
• Call-Back:
  • A time distortion passes over the bridge; when it clears, Janeway is still standing in center frame, except the ship is now on Red Alert. This shot is very similar to one from TNG’s "Yesterday’s Enterprise".
  • Seven hints at the events of Star Trek: First Contact, in which the Borg also tried to remove a troublesome enemy by changing the timeline.
  • A tea cup falling from the table and shattering is from Star Trek VI: The Undiscovered Country.
• Captain Nemo Copy: A man of culture who isolates himself and his crew from the outside world, driven by a quest that wreaks destruction on them all. It’s no coincidence that Annorax is named after the novel’s protagonist, Aronnax.
• The Chains of Commanding: The Doctor diagnoses Janeway as suffering from traumatic stress syndrome. It's not a stretch to guess Annorax is under similar strain, though his is largely self-induced.
• Chekhov's Gun:
  • Many of the events depicted in "Year of Hell" were foreshadowed in "Before & After", e.g. Neelix becoming a security officer and the torpedo stuck in the hull. This despite the fact that the character used to foreshadow the events (Kes) is no longer on board.
  • Paris' transverse bulkheads idea comes in handy when Voyager needs to pull a Hyperspeed Escape and loses part of the outer hull.
• Cliffhanger: At the end of Part One, Tom and Chakotay have been abducted by Annorax, and Voyager’s crew takes to the Escape Pods.
• Close-Enough Timeline: Defied; Annorax achieves this at the start of the episode, with the erasure of the Zahl restoring the Krenim Imperium to 98% of its original scale. However, because his wife's colony has not been restored to him, he is determined to keep trying.
• Cold Equation: The Doctor leaves a hatch open as long as he can, but eventually has to close the door on two crewmen who wouldn’t make it before an explosion destroys most of that deck.
• Companion Cube: Janeway gives a moving speech on behalf of Voyager.
  Tuvok: Curious. I have never understood the human compulsion to emotionally bond with inanimate objects. This vessel has done nothing. It is an assemblage of bulkheads, conduits, tritanium, nothing more.
  Janeway: Oh, you're wrong. It's much more than that. This ship has been our home. It's kept us together. It's been part of our family. As illogical as this might sound, I feel as close to Voyager as I do to any other member of my crew. It's carried us, Tuvok, even nurtured us. And right now it needs one of us.
• Crippling Overspecialization:
  • The Krenim timeship is immune to conventional weapons fire because its shields keep it outside the space-time continuum, an Outside-Context Problem. When the time core is disabled, the ship becomes a Glass Cannon.
  • The Wave-Motion Gun on the ship has no other setting besides "erase from existence," which means no matter how precise their target the results are always taking a sledgehammer to the timeline. Annorax is aware of this, but so single minded in his goals he thinks rigorous attention to detail when making the temporal calculations is all that is needed to fix his personal dilemma when all it's doing is creating more cracks.
• Critical Staffing Shortage: With several dozen crewmembers dead already from the Krenim attacks, Part 1 ends with significant damage to Voyager's basic systems to where it can't support everyone anymore. Janeway orders most of the crew to escape pods to find help, relying solely on the senior staff (minus the captive Chakotay and Paris) to crew the ship.
• Curb-Stomp Battle: When the timeship's conventional weapons open fire, they cripple the attacking fleet in seconds.
• Cut Himself Shaving: Tuvok does this with an absolutely wicked looking razor shortly after he's rendered blind.
• Damage Control: With only a skeleton crew on board, their entire time is spent making repairs.
• Dashed Plot Line: Even stretched over two episodes, some scenes are spaced months apart with a Captain's Log being used to fill in the gaps. Barring episodes with actual Time Travel, the roughly 10 month timespan is one of the longest of any episode of Star Trek.
• Death Seeker: Janeway chooses to remain on Voyager for the final battle even though it's almost certainly too damaged to survive combat.
• Deflector Shields: Voyager is getting hammered because the Krenim torpedoes use temporal technology that can pass right through Voyager’s shields. Thanks to Seven's analysis of the chronoton torpedo, they develop temporal shields that have the unexpected side-effect of leaving them unaffected whenever Annorax changes the timeline, which previously they hadn't even been aware of.
• The Determinator: Janeway and Annorax are each, in their way, determined to protect their people, but Janeway's actions are all defensive and focused on a clear threat where Annorax is consumed by an obsession that drives him to eliminate innocents in the name of restoring one specific person.
• Distinction Without a Difference:
  Tuvok: It is inappropriate to contradict the captain in front of the crew.
  Seven: That was not my intention. I simply pointed out that her decision was wrong.
• Doctor's Orders: Averted — using a precedent well-established in Star Trek continuity, the Doctor tries to relieve Janeway on medical grounds, but Janeway counters that he has no way to enforce that order. The Doctor says she could be court-martialed if they make it back to Earth. Janeway says if they do get home she'll be happy to face the music.
• Dramatic Irony: At the end, Janeway and crew are warned away from Krenim space and leave without incident, forever unaware of the year of hell they endured in another timeline.
• Dramatic Shattering = Portent of Doom: Janeway finds her lucky coffee cup has survived the destruction of the Ready Room. Just then the Krenim attack and the cup is knocked off the table and smashes.
• Enemy Mine: Annorax tries to make an ally out of Chakotay in order to solve their common problems; he's successful until his ruthlessness and obvious insanity convince Chakotay that he needs to be stopped. Tom and Janeway are more successful in gaining allies to oppose Annorax.
• The End... Or Is It?: After the timeship is destroyed, history gets a Reset Button back to 'normal' and we see Annorax in a happy moment at home with his wife whom he'd previously wiped from existence. She convinces him to put his work aside and join her, and the camera finishes on a shot of his table, on which lie the plans for the timeship. Even then, the Point of Divergence condition still applies. Even if Annorax builds a "second" (original) timeship, the complexities of the time-line do not guarantee a repeat of the past events.
• Exact Time to Failure: The Doctor gets angry at Janeway for spending more than the time he recommended breathing a Deadly Gas, though it's justified in this case as him trying to minimize Janeway's exposure.
  EMH: I told you eight minutes on that deck, not eight-and-a-half, not nine, and certainly not twelve!
• Fake "Better" Alternate Timeline: Double example. A Krenim named Annorax had previously tried to win the Krenim war against the Rilnar by removing the latter from history. This caused a plague that would have been averted by the presence of Rilnar DNA in the Krenim genome. Annorax attempted to fix that with another temporal incursion, causing the disappearance of his home colony and his wife.
• Final Solution: Annorax isn’t just trying to make the Krenim Imperium greater than its rivals, but to destroy those rivals from ever having existed (as well as restore the colony planet where his wife lived). He's at least humane enough to realise what he's doing is wrong, but not enough to stop.
• First-Name Ultimatum: Chakotay calls his captain “Kathryn” when she rejects his birthday present. She ignores him.
• Fixed Forward-Facing Weapon: The Krenim timeship’s temporal disruption beam. Makes you wonder why any of the ships of Janeway’s fleet would willingly fly in front of it during the final battle...
• Forever War: The crew of Annorax’s vessel have been trying to change history for over two hundred years as no-one can age inside the temporal field. When Annorax tells his Number Two they have all of eternity to get it right, he doesn't look happy.
• A God Am I: Downplayed; Annorax doesn't express the sentiment in so many words, but his willingness to Ret-Gone whole species from history and arrogant insistence that only time itself can truly judge him say volumes about his attitude. Paris ultimately declares him a paranoid megalomaniac.
• Going Down with the Ship: Janeway even invokes the trope.
• Hair Memento: All Annorax has left of his wife is a lock of her hair.
• Hand of Death: The Krenim all wear black gloves.
• Handicapped Badass: Even rendered blind, Tuvok carries on with his duties, handling the disability with his usual Vulcan stoicism.
• Heel–Face Turn: Spurred on by Tom and Chakotay, Annorax's second-in-command Obrist rebels against him, making the timeship vulnerable to being destroyed.
• Heel Realization: Chakotay gets this when he sees Annorax wipe out another civilization, simply to see what will happen.
• Heroic Sacrifice: Janeway crashes Voyager into the timeship in the hope that the destruction of the ship will cause the timeline to revert to normal. Luckily, it works.
• He's Dead, Jim: Time changing for the worst is immediately marked by a dead ensign on the bridge.
• Honor Before Reason:
  Tuvok: Given Voyager's damaged state, the probability of your surviving an armed conflict is marginal.
  Janeway: Oh, I know the odds, but I have to stay. Voyager's done too much for us.
  • After achieving a 98% restoration, a result they had never witnessed in 200 years of trying, Obrist argues that they should dismantle the weapon and return to their people. But Annorax is determined to keep going until his homeworld is restored.
• Hyperspeed Escape: Krenim warships can only do Warp Six, so Voyager (with a maximum cruising velocity of Warp 9.975) at least has the option of outrunning them. The last time Janeway tries this, however, large parts of the hull come flying off due to the structural damage it has sustained so far.
• I Ate WHAT?!: Annorax makes a meal for Chakotay and Paris. They seem to enjoy the food until they find out where it came from. Each dish that Annorax has had prepared is the last remnants of a civilization he has completely removed from history with his temporal weapon. There are about 20 different items on the table, showing the scale of what he has done. Chakotay and Paris' horror is palpable.
  "This bottle is the only component left of the once powerful Malkoth race. Everything else about them, cities, culture, the very species itself never existed, because of me. Every dish you see here comes from a civilisation that has been erased from time. Mister Paris, you're devouring the last remnants of the Alsuran Empire."
• I Owe You My Life: Unstated, but strongly implied to be the reason that Seven takes on the role of a blind Tuvok's caretaker, as he lost his sight saving her from an explosion.
• Immortality Field: The timeship is clearly protected by one, considering that Annorax and his crew haven't aged a day in over 200 years.
• Internal Retcon: Implicit for every Series Continuity Error up to that point.
• Ironic Echo Cut: From Annorax and Chakotay toasting their alliance with crystal wineglasses to the crew of Voyager toasting their absent friends with the Elixir of Endurance in battered metal cups.
• Irony:
  • By ramming Voyager into the timeship and destroying it, thus resetting history, Janeway ends up giving Annorax the only thing he really wanted anymore: more time with his wife.
  • In the original timeline, when Voyager enters “Krenim” space, the commander of the small Krenim ship fires on Voyager. Only when his weapons do no damage, does he inform them that the area is in dispute and advises Voyager to leave the region. A pissed-off Janeway refuses to do so, and Voyager continues through “Krenim” space. In the new timeline created at the end of the episodes, the Krenim commander gives the same warning without firing on Voyager. A more amenable Janeway succinctly instructs Tom to plot a course around Krenim space.
• It's All About Me: Annorax claims his time-alterations are to restore the Krenim Imperium to its former glory. But it's obvious he only really cares about bringing back his wife and homeworld, especially after he declares a 98% restored Imperium (with his wife's colony in the missing 2%) isn't good enough. Paris even notes that Annorax has reached a point where he appears to basically believe that Time itself has a grudge against him and is punishing him for his hubris by 'withholding' his wife.
• It's a Long Story: Seven knows about Zefram Cochrane's vessel The Phoenix because the Borg were present during those events. “It’s a complicated story.” Since this episode took place before Voyager had re-established contact with the Federation, it's understandable that they wouldn't be aware of those events.
• Jumping Off the Slippery Slope: Annorax reflects on how easy it was to use the temporal weapon the first time, and how easily he's continued to justify it.
• Just One Second Out of Sync:
  • Krenim chroniton torpedoes generate a field which pushes them out of normal space-time until the moment of impact, rendering all defensive measures worthless against them until Voyager can generate a similar field of its own.
  • Annorax's ship has a temporal core which has the same effect, rendering the entire ship immune to changes in the timeline and somehow making the entire crew immortal as long as it's active.
• Karma Houdini: Annorax ends the episode living happily with his wife on their home colony, with no memory of his 200+ year campaign of temporal genocide. Of course, technically he never committed those crimes in this new timeline...
• Last of Its Cuisine: When Paris and Chakotay are captured on the time ship, Annorax tries to gain their cooperation by inviting them to dinner. He offers them a buffet of delicacies from civilisations that have been erased from time and now never have existed.
• Lethal Chef: Voyager's crew drink a toast to absent friends, only to pull disgusted expressions at Neelix's latest concoction. At least this time the limited resources give him a good excuse.
  Neelix: I call it the Elixir of Endurance. It's loaded with amino acids, carbohydrates; all the nutrients necessary for the crew to withstand these stressful conditions.
  Torres: Ration cubes.
  Neelix: Well...yes, but this time, pureed and mixed with water and enhanced with Talaxian spices.
  Seven: It is offensive. Fortunately, taste is irrelevant.
• The Lost Lenore: Annorax is obsessed with tweaking the timeline until his wife is brought back to him.
• The Main Characters Do Everything: An egregious example, as Tom goes straight from showing off his modifications to Voyager's hull to assisting the Doctor with triage. This is literally the case when the crew Abandon Ship except for a scratch crew made up of the main characters.
• Mike Nelson, Destroyer of Worlds: Chakotay suggests using the weapon ship to erase a comet, which would prevent Voyager from entering Krenim space. Annorax has him run a simulation that demonstrates what the actual result of this would be — namely the eradication of all life within 50 light years, as fragments from the comet had landed on a planet billions of years in the past and helped create life on it, which eventually gave rise to a spacefaring species.
• Minion with an F in Evil: Obrist helps Tom sabotage the timeship because he wants their ordeal to end.
• My Friends... and Zoidberg are True Companions
  The Doctor: Who would have thought this group of voyagers could actually become a family: Starfleet, Maquis, Klingon, Talaxian, Hologram, Borg, even Mr. Paris.
• Necromantic: The reason Annorax keeps aiming for the perfect result is because he erased his wife from existence, and they lived on a colony that only exists in the original timeline.
• Nice Job Breaking It, Hero!: Voyager's temporal shields are enough to throw off Annorax's calculations, causing him to come after them when his latest incursion reverts the Krenim to a pre-warp status.
• Never Trust a Title: The final date subtitle is Day 257 as they engage in the final confrontations with the Timeship. This makes the span of the episode closer to 9 months. Day 1 with the first temporal incursion Janeway comments that their Krenim attacks have been going on for several weeks at that point, so there is some wiggle room but still not a full year. That said, it came from the previous Voyager episode "Before and After" as the term used by the crew to describe the Krenim encounter, and such nicknames are rarely precise.
• No-Sell: As long as the temporal core is active, Annorax's ship is immune to enemy attacks.
• "Not So Different" Remark: Annorax compares his attempts to restore his original timeline to Voyager's journey home, in an attempt to sway Chakotay.
  Chakotay: You've been at this for 200 years, Annorax. What makes you think you're ever going to succeed?
  Annorax: What makes you think Voyager will ever reach Earth? The odds against you are astronomical. Yet you keep trying.
• Not So Stoic:
  • When Janeway announces her intention to crew Voyager by herself in the Final Battle, Seven of Nine can be seen in the background, spending a solid minute just staring at the Captain in shock.
  • As Janeway hugs him goodbye before the climax, Tuvok quietly but firmly returns the embrace.
• Nothing Personal:
  • Annorax tells Janeway that he bears her no malice; she's just an obstacle he needs to get rid of. By the end of Part II, however, he's visibly much more bothered by her resolute refusal to die, specifically ordering his crew to target Voyager when the ship is damaged and left unable to fight back.
  • Horrifyingly deconstructed with Annorax's other victims; he clearly doesn't have anything against the races he erases from history, but the callous way he eliminates them to serve his own goals makes his madness very apparent; despite promising Chakotay that he would avoid causing harm, the moment Annorax thinks wiping out a species would get him closer to his goal, he takes the chance.
• OOC Is Serious Business: When the Doctor tries to relieve Janeway on medical grounds, she threatens to shut down his program. He points out that threat alone is proof that she's not thinking rationally. To her credit, she apologizes.
• Open Air Driver: In the final battle, the Voyager has its bridge opened up and a makeshift forcefield keeping Janeway inside. Janeway decides to ram the timeship, which causes time to revert to before the ship came to be in the first place.
• Outside-Context Problem:
  • The Krenim, and specifically the timeship and their temporal-based weapons. Janeway and the Voyager crew have no idea what is causing the temporal shockwaves, let alone that they are a weapon, and have no defenses against the Krenim’s temporal torpedoes until near the end of Part I.
  • The timeshield they developed ended up protecting them from another timeline alteration from Annorax, which in turn throws off all their calculations to where the Krenim fleet are cargo transports instead of warships. This serves to attract Annorax to target Voyager for temporal destruction...
• The Perfectionist: Annorax. After being told that they've achieved a 98% restoration, he orders another temporal incursion and makes it clear he won't stop until "every colony, every individual, every blade of grass is restored." Of course, he's mainly motivated by the fact that his wife's colony wasn't in the 2% that was restored.
• Plot Armor: Tuvok is only a few feet away from an exploding torpedo, and while he's permanently injured, his only injury is blindness. Seven, who he shielded with his body, is uninjured. ^note  Tuvok being rendered blind is ironic given that Tuvok actor Tim Russ had been in the running to play the blind Geordi LaForge before Levar Burton was chosen to play the role.
• Plot Parallel: As noted under The Determinator, Annorax and Janeway are both facing the annihilation of everything they hold dear, with the viewer getting a ringside seat to how well they handle it (or don't) and what means they are willing to justify to achieve their desired ends. Janeway is proven willing to give up everything, even her own life, while Annorax will sacrifice everyone but himself (and his power). This is even represented symbolically by their Tragic Keepsakes: Janeway, though touched by the watch Chakotay gives her, insists that it should be recycled because its components would be better used helping everyone on the ship, while Annorax refuses to "recycle" the lock of his wife's hair, instead retaining it in a stasis field to keep him focused on his goal.^*And ironically, it may be his refusal to sacrifice, to let this piece of her go, that is preventing him from achieving what he seeks, thanks to the way the timeshield and Ripple Effect Indicator works.
• Point Defenseless: Averted. The timeship has gatling gun like conventional weapons on the sides of its hull.
• Point of Divergence:
  • Annorax gains a 98% restoration of the Krenim Imperium which his Number Two insists is a Close-Enough Timeline, but Annorax continues with his quest to change the timeline because he's obsessed with getting the perfect result (his wife is part of the unrestored 2%). The second time he tries, Voyager’s new temporal shields are enough to throw off his calculations and revert the entire Imperium to a pre-warp state.
  • In Part 2 Annorax demonstrates why such precision is important. Chakotay tells him Voyager made a course correction eight months ago to avoid a comet, putting them on a heading into Krenim space, so he suggests erasing the comet from time. Annorax says that would destroy almost 8000 civilizations.
    Annorax: Four billion years ago fragments from that comet impacted a planet. Hydrocarbons from those fragments gave rise to several species of plant life which in turn sustained more complex organisms. Ultimately several space-faring civilisations evolved and colonised the entire sector.
    Chakotay: By erasing the comet I altered all evolution in this region.
    Annorax: Past, present and future. They exist as one. They breathe together. You're not the only person to make this mistake. When I first constructed this weapon ship I turned it against our greatest enemy, the Rilnar. The result was miraculous. With the Rilnar gone from history, my people, in an instant, became powerful again. But there were problems. A rare disease broke out among our colonies. Within a year, fifty million were dead. I had failed to realise that the Rilnar had introduced a crucial antibody into the Krenim genome and my weapon had eliminated that antibody as well.
    Chakotay: And you've been trying to undo that damage ever since, but each time you pull out a new thread, another one begins to unravel.
• Pragmatic Villainy: After holding them prisoner for two months, Annorax has Tom and Chakotay cleaned up and presents them with a fine meal, even offering to manipulate time to get Voyager closer to home; Tom quickly sees through his supposed hospitality, however, and correctly deduces that Janeway has outfoxed Annorax and that he can't find her, forcing him to resort to diplomacy.
• Pre-Mortem One-Liner: Just before crashing Voyager into the timeship, Janeway declaims rhetorically, "Time's up!"
• Ramming Always Works: Janeway rams a fatally damaged Voyager straight into the timeship, causing all history to reset to the beginning of the year.
• Red Alert: Newly-promoted security officer Neelix consults Tuvok on what the audio warning should be. “Do you want it to say, ‘Intruder alert’ or do you want it to say something more dramatic like ‘Warning – intruder alert’ or ‘Intruders among us! Danger! Danger! Intruders among us!’?
• Real Men Get Shot: Tuvok takes getting blinded with the expected Vulcan poise. Janeway shows this trope applies to women too.
  Janeway: Tell the Doctor I'll be coming back with severe burns.
• Removed Species Calamity: Annorax's backstory involves him inventing a superweapon during a war between his people, the Krenim, and another civilization called the Rilnar, with which he erased the Rilnar from history. Unfortunately, because past Krenim-Rilnar interbreeding introduced a crucial antibody into the Krenim genome, he discovered to his horror that he had also doomed the Krenim to extinction: his own family now had never existed. He spent the following centuries up to his encounter with USS Voyager selectively erasing other items and peoples from history trying to rectify his mistake, but has only succeeded in Digging Himself Deeper.
• Reset Button:
  • Invoking this trope, to restore the lost greatness of Annorax's society, is the timeship's entire purpose.
  • Destruction of the timeship undoes two centuries of Annorax's timeline tweaks and returns the timeline to its original form with a single difference; Annorax never built the timeship.
• Retcon: "Year of Hell" was originally meant to be all of season 4, and wasn't going to involve a Reset Button, and would have involved a more general conflict with the Krenim, rather than a single time-ship. The departure of Kes also means that it's Seven who deals with the chronoton torpedo; neither is there any mention of Kes' warning about the Krenim. Although the former, at least, is explainable by Kes altering the timeline. What is not, however, is how, the Year of Hell went from Constant attacks by the Krenim as stated in Before and After, to dealing with a single timeship (although that could be explained by the fact that, without Seven around, Voyager likely never devised the temporal shield in that timeline — meaning that Annorax's calculations were never thrown off, the Krenim just got stronger with each incursion and Annorax himself never had any reason to go after Voyager).
• Ret-Gone: Essentially what the Krenim timeship is designed to do in-universe, and what it ultimately does to itself when Janeway rams it.
• Retro Upgrade: Paris comes up with transverse bulkheads to seal off Voyager’s sections in case of a hull breach. He got the idea from the Titanic.
  Janeway: As I recall, it sank.
  Paris: I admit I’ve improved on the design.
• Ridiculously Difficult Route: Janeway doesn't take the first warning seriously as the Krenim commander is hardly a threat, and she's never been the type to back down from casual bullying. Suddenly they're inside the territory of an aggressive species, but it's not revealed how they got there in this alternate timeline (it's possible they got in the path of a Krenim offensive). Averted when Janeway accepts the polite warning of the Krenim commander at the end, and avoids the 'disputed' region.
• Ripple Effect Indicator:
  • The weaselly Krenim subcommander who cringed in the presence of Voyager becomes very smug indeed when his guns outmatch theirs. At the end of the episode, he's a little cool, but respectful.
  • Subverted with the lock of hair belonging to Annorax's wife, which is not only on the timeship but kept preserved in a stasis crystal, so it can never be affected by any of the changes in the timeline he causes. It's entirely possible that this is why he can't ever get 100% recovery, because time can never fully change or reset to bring her back so long as a piece of an erased timeline still exists; his smile when the crystal is broken and it vanishes could suggest he's realized this. See the YMMV tab for more details.
• Rousing Speech: Janeway to her crew before they abandon ship.
• Rule of Three: The Krenim warship commander appears three times, each with a different personality due to the changing circumstances of the Krenim Imperium.
  • The first time, he's a xenophobic but pathetic nuisance, trying to assert his will over a ship ten times larger than his. Janeway all but laughs at him.
  • When the timeline changes, he becomes a Smug Snake, calmly and heartlessly discussing the wholesale slaughter of Voyager's crew.
  • And, finally, after the Reset Button, he shows a professional demeanor, firmly yet politely requesting Voyager avoid this area of space, and wishing them safe travels when they comply.
• Rule of Symbolism: Chakotay gives Janeway a watch for her birthday in an episode about time. Counts as an In-Universe version too, as it's a replicated reproduction of a watch belonging to a 19th-century captain who brought his ruined ship home against all odds. Janeway originally refuses to accept the gift, as they have limited replicator supplies. Later, she finds it again and attaches it to her belt.
• Secretly Selfish: It's all but outright stated that Annorax's original goal of restoring the Krenim Imperium has come second to his desire to undo the deaths of his family; even a 98% restoration of the Imperium isn't good enough for him because it didn't restore his family's colony.
• Serious Business: What's the first thing Janeway retrieves from the trashed Ready Room? Her coffee pot, of course!
• She's Dead, Jim: The first temporal shift reveals a ruined bridge and a dead female crewman.
  Chakotay: She's dead...
• Shout-Out:
  • Word of God says Annorax was named after Professor Arronax, the narrator of 20,000 Leagues Under The Sea. Paris alludes to the novel by calling Annorax "Captain Nemo".
  • Paris sarcastically calls Annorax 'Captain Bligh', referencing the Mutiny on the Bounty.
  • His anthropomorphism of time as a ruthless, cunning foe is straight out of Moby-Dick.
  • Janeway demands trioxin to treat her injuries. The Doctor refuses, perhaps because it has a habit of turning people into zombies.
• Small Name, Big Ego: The initial Krenim attack on Voyager is brushed off because the Krenim in that timeline have limited warp and weapons capability, despite his arrogant posturing, but that timeline only lasts a few days before Annorax's next major temporal incursion.
• Smug Snake: The first Krenim ship encountered by Voyager is commanded by an officer brimming with self-importance. It initially comes across as overcompensating, but once the time shift gives him the firepower to back up his attitude, he's very condescending to Janeway, insisting on her surrender with an arrogant chair swivel. Once the timeship is destroyed and history reset, he's much more reasonable, politely advising her that the sector Voyager was approaching was currently in dispute and suggesting that Voyager avoid Krenim space to avoid being caught in the middle of it.
• Something That Begins with "Boring": Stuck in a turbolift, Harry and B’Elanna play a quiz game. Most fanfic writers would make them have sex instead, but B’Elanna has internal injuries.
• Space Clouds: A crippled Voyager hides inside a nebula so dense that it produces a visible fog inside the ship's corridors. Captain Janeway even orders the hull breaches sealed to avoid having an "indoor nebula." One would think she'd be more concerned about all the air escaping...
• Spanner in the Works: Voyager is able to rig up temporal shields; however, this leaves it unaffected by the temporal shift, while at the same time upsetting all the changes that Annorax is trying to make.
• Standard Female Grab Area: Averted; the Doctor grabs Janeway's upper arm to stop her leaving Sickbay. She responds with a Death Glare and a threat to shut down his program.
• The Story That Never Was: Due to a Cosmic Retcon, Voyager's "Year of Hell" with the Krenim never occurs, and their encounters with the species are reduced to a footnote. The only records Voyager would have of the Krenim have is Kes's report from "Before and After" the previous season, and here they meet a Krenim ship that requests they go around their territory, which they comply with. Much later in Star Trek: Discovery the Krenim were revealed to be a faction in the Temporal Cold War from Star Trek: Enterprise, but that's the extent of the canon timeline influence.
• Swivel-Chair Antics: The Krenim captain after the time shift lets him take a level in arrogance.
• Taking the Bullet: Tuvok shields Seven from an explosion, permanently blinding him.
• Tempting Fate:
  • During Voyager’s first encounter with a Krenim vessel, Janeway scoffs at the threat from the inferior ship, telling its captain that she’s not turning around “unless he’s got something bigger in his torpedo tubes.” Cue the first temporal shockwave, which transforms the puny Krenim vessel into a massive warship armed with temporal torpedoes...
  • Janeway gripes that this is turning into the Week of Hell. A year later, things have gone From Bad to Worse.
  • During the final battle, Annorax's final order is to "put Janeway out of her misery"; moments later, Janeway does the job for him... by ramming the time ship with Voyager, destroying it and undoing all of the temporal meddling Annorax has carried out for the last 200 years.
• That's an Order!:
  • Tuvok to Seven when she stays to calculate the temporal variance of the torpedo, enabling Voyager to construct a shield against them...and delaying Tuvok so he gets blinded by the exploding torpedo.
  • The Doctor insists the captain give him time to treat her injuries, whereas Janeway just wants a hypo of trioxin to keep her going.
    EMH: Trioxin is used in emergency situations as a stop-gap measure. Your lungs have suffered serious damage. They need to be treated properly. Doctor's orders.
    Janeway: Captain's orders. Trioxin. Now.
    EMH: Aye, aye. It's your body. Who am I to judge? I'm only the Chief Medical officer.
  • Chakotay ordering Tom to not do anything against Annorax. Not that Tom seems inclined to obey that order.
• Time Is Dangerous: Obviously Annorax's weapon is one of the most horrific ever shown in the franchise, but his obsession with it has led him to think of himself as less of an engineer confronted with a problem so much as a profiler chasing an UnSub.
  Annorax: When I tell that Time has moods, a disposition to be intuited, I'm not speaking metaphorically.
  Chakotay: What do you mean?
  Annorax: Anger is one of its moods. Anger and the desire for retribution, vengeance. Time itself has tried to punish me for my arrogance. It has kept me from my wife, denied me my future.
• Time-Passage Beard: Chakotay starts growing at least a Time-Passage Mustache when he is first seen in Part 2 on board Annorax's time ship. It is soon shaved off when he is brought out of his holding cell to meet with Annorax.
• The Time Traveller's Dilemma: Invoked and played to its obvious conclusion; the best thing to do with a time machine is un-invent it.
• Title Drop: Subverted
  Janeway: This is turning into the week of hell.
  • The Title Drop actually occurred in "Before and After"
  Paris: That was the beginning of the Year of Hell. Well that's what some of us call it now.
• To Absent Friends: Well, "distant" friends, actually, but the sentiment is close enough.
• Too Dumb to Live: During the final battle, two of Voyager's allies fly directly in front of the weapon ship after making an attack pass, leaving them open for a full temporal burst that erases them from time.
• Tragic Keepsake
  • Annorax keeps a lock of the hair of the wife he accidentally erased from time in a special container that shields it from dissipating into nothing because it can't exist in the world he created. As his vessel is destroyed, he watches helplessly as the container breaks and the hair vanishes from existence... and then he smiles as he realizes he's about to get exactly what he's wanted; the weapon backfiring erases itself from history, restoring all of his victims — including his wife.
  • Janeway is quite moved when she finds Chakotay disobeyed orders to recycle the watch, and wears it from then on.
• Trash the Set
  Janeway: You have the Bridge...what’s left of it.
• Un-person: In a sad moment, Obrist admits that he stopped celebrating his family's birthdays because they probably died centuries ago. Or worse, they may have been erased from history altogether.
• Vestigial Empire: When Annorax first built the weapon ship, the glory days of the Krenim were long behind them and he used it on their greatest enemy in an attempt to restore the Imperium to power.
• Villainous BSoD: Annorax has been frustrated in his quest for so long, he believes that Time itself is somehow punishing him for trying to change it.
• Voodoo Shark: Annorax and his crew are ageless due to their ship's temporal shields, which protect them from the flow of time. It doesn't stop them from eating and breathing.
• The Watchmaker: Janeway realizes that she's starting to lose track of time. Chakotay chirps that he has a remedy for that, and presents her with a pocket-watch. She later finds the watch again while rooting through Voyager's wrecked upper decks. It also symbolizes Chakotay's newfound power as an apprentice onboard Annorax's timeship.
• Wave-Motion Gun: An unusual one in that it doesn't just destroy its targets; it erases them from history.
• We Come in Peace — Shoot to Kill: The Krenim Imperium's response to Voyager trying to negotiate a way through their space is just to shoot at them.
• What the Hell, Hero?: Tom tells off Chakotay for working with Annorax, and various crewmembers question Janeway on her recklessness.
• Who Wants to Live Forever?: Annorax may be content to spend eternity rewriting history, but his crew sure isn't...
• Whole-Plot Reference: At least the portion set aboard the Krenim temporal weapon ship is this to 20,000 Leagues Under the Sea. Referenced in the name Annorax — a version of Arronax, The Narrator of the aforementioned novel.
• Wild Card: Voyager for Annorax; because she arrived unexpectedly from such a faraway sector and is generating her own temporal field, it's impossible to predict her effect on the timeline. Annorax initially considered the ship to be a minor element, but when the temporal shields throw off his latest incursion, he decides to take a closer look.
• With All Due Respect: As per usual for this trope, Janeway uses it on someone she obviously doesn’t respect at all.
  Krenim subcommander: Reverse course, or be destroyed!
  Captain Janeway: With all due respect, unless you’ve got something a little bigger in your torpedo tubes I'm not turning around.
• You Can't Go Home Again: Annorax can't, because his home no longer exists — he accidentally Ret Goned it two hundred years ago, along with his wife and children. He's been desperately trying to correct that mistake ever since, without success.^note  And even if he somehow managed it, he still wouldn't have a family to go back to, as they'd be long dead by now. Whether he would retire satisfied that they got to live out their lives, or continue to rant and rave at time for keeping them from him, we'll never know. In the end, however, history is changed so that he never left home in the first place.