"Most of us are going somewhere we know. That doesn't mean we should know what to expect."
— Captain America, Avengers: Endgame
With time travel, the possibilities for where (or rather, when) the characters can go are virtually endless. One time travel hotspot is the events of a previous episode, or the pilot of the season/series. As the viewers have already seen what happened, it can come off as a nostalgic re-visitation of previous events, and can serve as a celebration of the show as a whole. Or in a more story-driven note, it might involve some sort of time travel mess with the past or solve some sort of plot point in that episode.
Can serve as justification for Meet Your Early-Installment Weirdness, and lead to Once More, with Clarity or Go Back to the Source. Guaranteed to have some sort of Continuity Nod.
For video games, compare Nostalgia Level (for a single revisited level), All the Worlds Are a Stage (for a level that references or evokes multiple previous levels), and Megamix Game (when a full game references or evokes multiple previous installments).
Examples:
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Anime & Manga
- In Attack on Titan, when Eren and Zeke are scouring their father Grisha's memories, one of the memories they visit is of him leaving his family for a supposed business trip, which by that point they knew was, in fact, to take the Founding Titan from Frieda; a departure that was depicted in the very first chapter/episode.
- In the manga series Blue Exorcist, protagonist Rin Okumura revisits the very first chapter while time traveling and finally sees the full story of that day that he hadn't before.
Comic Books
- In one early arc of the Adventure Time comics, a time-traveling Finn and Jake pass through the pilot episode, where they see the pilot versions of themselves from a distance and lampshade/hand-wave the Early-Installment Weirdness.
- Booster Gold: Many of Booster's solo adventures feature him traveling to various historic stories in the DC Universe, including the death of Ravager I, Barbara Gordon's paralysis, and more personally the death of Ted Kord. He tried to stop the latter two, but Barbara's future as Oracle was already set in stone, and letting Ted live didn't go very well in the long run.
- In Deadpool #11, Deadpool travels back in time to The Amazing Spider-Man (1963) #47 and disguises himself as Peter Parker before fighting Kraven on his behalf.
- Happened twice with Fantastic Four #19 (when the FF first met Rama-Tut in 2940 BC). In Doctor Strange #53, Strange traveled back there searching for the past lives of a woman named Morganna Blessing, but gets stuck in his astral form. Being immaterial, he was unable to affect the course of the adventure significantly, but it was retconned that he was responsible for freeing The Thing from Rama-Tut's Mind Control. Then, in West Coast Avengers #23, said team time travels there as well, and run into both Doctor Strange and the FF.
- Doctor Who (Titan): In the first arc of the Thirteenth Doctor Year Two series, Thirteen and her companions go to London in the 1960s and get caught up in the events of the hugely popular Tenth Doctor TV episode "Blink", which introduced the Weeping Angels.
- Monica's Gang:
- In "De Volta Para a Historinha", Jimmy Give inadvertently goes back in time in one of Franklin's time machines to 1960, meeting his and Smudge's old designs.
- The 60-year anniversary Intercompany Crossover had Monica teaming up with various alternate versions of herself and traveling to old books.
Fan Works
- Adventures of a Line Hopper: The premise of Your Nature has Buffy being sent back in time to the climax of the first fic Don't Be.
- In Returning the Stones, Captain America times travels the same times and places the Avengers returned to in Avengers: Endgame in order to return the Infinity Stones.
Films — Live-Action
- Avengers: Endgame: Thanks to Thanos destroying the Infinity Stones after his infamous snap, the Avengers have to use time travel to go to the past where they still existed so they can undo the snap. To find them they go to the events of The Avengers, Thor: The Dark World, and Guardians of the Galaxy (2014). We get to see them arrive during the 2012 Avengers' famous pose, and right at the start of Peter Quill going after the Power Stone.
- In Back to the Future Part II, Biff gives his past self a Timeline-Altering MacGuffin that leads to a Bad Future. Doc and Marty have to revisit the events of the first movie and get it back while avoiding their past selves to prevent a possible Temporal Paradox.
- Robo-Rita's plan in Mighty Morphin Power Rangers: Once & Always is to travel back to the first episode of Mighty Morphin' Power Rangers and help past self kill the Power Rangers before they get their powers. The adult Rangers stop her but we do see reused footage of the astronauts about to release her in the past.
- The Revenge of the Old Queen was a cancelled sequel to The Rocky Horror Picture Show that would have climaxed with the characters travelling to the end of the first movie to save Frank. They're too late and most of them are killed by the castle blasting off.
- The Santa Clause 3: The Escape Clause: Jack Frost tricks Scott/Santa into wishing he was never Santa, thus triggering the "Escape Clause" and sending them back in time to the first film when the original Santa fell off Scott's roof. Jack makes Santa fall off before Past Scott can, and steals the coat and wears it, igniting a Bad Future where Jack Frost is Santa.
- Terminator Genisys starts as a P.O.V. Sequel telling The Terminator from Kyle Reese's point of view. But he finds the timeline altered where a T-1000 killed Sarah Connor's parents when she was a child and has since been on the run with a T-800 protecting her. We also get a Curb-Stomp Battle where the good T-800 and Sarah destroy the antagonist of the original movie.
Literature
- Animorphs:
- In Animorphs: The Change, Tobias is given his morphing ability back, but his hawk body remains his default form. He is briefly sent back in time a day before he met Elfangor along with the rest of the cast. Tobias uses the opportunity both to acquire his human body as a morph and instructs his past self to go through the construction site with Jake the next day.
- Animorphs: Back to Before has a guilt-ridden Jake in a Moment of Weakness offered the chance to go back to the start of things and not become an Animorph along with his friends, but get to be ignorant, powerless, normal kids. The next chapter has the kids meeting up at the mall and walking home together as they had in the first book, but this time casually deciding to take the boring, safe route. None of them has more than a vague sense of what should have happened, and before long the timeline diverges significantly.
- Artemis Fowl: Once time travel is introduced, Holly uses it to go back in time before Commander Root was murdered. She knows she can't save him, so instead uses the opportunity to thank him for everything he's done for her.
- The Saga of Darren Shan: After Darren dies and is pulled out of the lake by Evanna, he does this to stop himself from becoming a vampire in the first place.
Live-Action TV
- A third season episode of Andromeda had a flashback that showed there was an attempt to make Gaheris Rhade The Chosen One, but after failing, he was forced to travel back mid-Season 2 and Set Right What Once Went Wrong.
- The Cold Case Season 2 premiere "The Badlands" has the team re-opening the triple homicide Lily was heading over to investigate at the start of the pilot episode.
- Doctor Who:
- In "Attack of the Cybermen", the Sixth Doctor has to contend with the aftermath of a previous adventure of his, namely the destruction of the Cybermen's home planet of Mondas in "The Tenth Planet" when he was in his first regeneration. In this story, the Cybermen have commandeered a time machine and gone back in time to prevent Mondas from being destroyed by destroying Earth first (Mondas' destruction having been set in motion by humans originally). Though the Doctor doesn't meet his past self or companions, this plot directly involves the events of "The Tenth Planet" and illustrates what can happen if the Doctor's enemies can gain the power to go back and change history like he can.
- "Remembrance of the Daleks" is set in Shoreditch, London, in 1963, just weeks after the events of the very first episode, "An Unearthly Child", and involves the school that the Doctor's first human companions, Ian and Barbara, worked at. However, this is downplayed as the 20th-century events of the early serial are not themselves revisited.
- "The Wedding of River Song" has a season-wide example. Series 6 premiere "The Impossible Astronaut" has a future version of the Doctor appear who ends up getting shot and (apparently) killed by a mysterious astronaut. The episode starts with the Doctor knowing this, and shows it from his perspective, until River Song refuses to shoot and time breaks. Eventually it's fixed, as the Doctor survives by Tricked Out Time.
- In "The Name of the Doctor" Clara's nature as the impossible girl gets revealed as she follows the Great Intelligence into the Doctor's timeline to prevent him from undoing all the Doctor's successes, getting fragmented into countless versions of herself across time and space to do so. What follows is a montage of Claras showing up in various places around various Doctors, some clips being from actual previous episodes with Jenna Coleman superimposed into the scene.
- "Twice Upon a Time" begins by recreating some scenes from the First Doctor's final story, "The Tenth Planet".
- The Flash:
- In the Season 2 episode, "Flash Back", Barry travels back to a Season 1 episode to get the information he needs from Wells on how to stop Zoom, Season 2's Big Bad.
- In the Season 5 episode and the series' 100th episode, "What's Past Is Prologue", Barry and his daughter from the future travel back to various points throughout the first three seasons, including the pilot and the aforementioned "Flash Back", to retrieve the components for a device that the team believes will defeat the current season's Big Bad Cicada.
- Kaizoku Sentai Gokaiger: In episode 40, the Gokaigers are tasked by Domon/TimeYellow to travel back to October 2010, in order to save a temple from being destroyed. This takes them to the events of Tensou Sentai Goseiger vs. Shinkenger: Epic on Ginmaku, where the Gokaigers sans GokaiSilver made their Early-Bird Cameo; the latter's absence is explained away by him bonding with the kid guest star of the episode (who's then revealed to be Domon's son with his present-day girlfriend Honami)
- Odd Squad: Olympia, Otis and Oona travel back in time to the 80s to see Oprah becoming Ms. O, an event that was seen in the season one episode "Totally Odd Squad". They accidentally prevent it from happening and create a bad future where a still-evil Odd Todd rules Odd Squad.
- The third season finale of Once Upon a Time (2011) has Emma and Hook time travel back to when Emma's parents met, as seen in the third episode of the series. They accidentally prevent the meeting, so have to ensure Emma's parents meet and fall in love some other way.
- At the end of the series finale of the original Quantum Leap, Sam leaps back to the events of "M.I.A." from season 2.
- The season 1 finale of Quantum Leap has Ben and Martinez enter a past version of the quantum leap accelerator while they are both in the middle of a leap to 2018, accidentally sending them back through their previous encounters in "Ben, Interrupted", "S.O.S.", and "Salvation or Bust".
- Star Trek:
- The Star Trek: Deep Space Nine episode "Trials and Tribble-ations" has the cast traveling back in time to the Star Trek: The Original Series episode "The Trouble with Tribbles".
- The final episode of Star Trek: The Next Generation, "All Good Things...", has Captain Picard traveling back to the events of the series' first episode, "Encounter at Farpoint".
- Star Trek: Voyager:
- "Relativity" has Seven of Nine traveling back to just before the pilot episode "Caretaker" as well as an indeterminate point in the show's second season.
- "Shattered" has Chakotay travelling to various points in Voyager's timeline due to a Negative Space Wedgie; he subsequently abducts Janeway from early in "Caretaker", before they even met, to protect himself.
Theatre
- Harry Potter and the Cursed Child: The climax involves Harry, Ron, and Draco traveling back in time to the death of Harry's parents in order to prevent Voldemort's daughter from completing her father's victory by distracting her at the right moment. By preventing her from warning Voldemort, they ensure he is defeated by murdering Harry's parents, which sets off the long gambit that leads to his own final death.
- A Very Potter Sequel is both a sequel and a prequel to A Very Potter Musical, since it features characters going back in time. At one point at the climax (as in Harry Potter and the Prisoner of Azkaban), Harry, Ron, and Hermione travel back to earlier in the play. They see earlier versions of themselves played by other actors, which causes them some confusion (although nobody else sees a difference).
Video Games
- In City of Heroes: In the introduction to Ouroboros, player heroes and villains are sent to revisit Outbreak and Breakout, respectively, the original tutorial zones for both sides.
- At the end of Crash Bandicoot 4: It's About Time, Dr. Cortex decides to travel back in time to 1996 in order to undo his greatest mistake: Crash himself, with the final level area being Cortex Castle.
- Dragon Quest V: Early in the game (while the hero is still a child), you meet a man looking for your father. Much later in the game, you are that man, and can meet your past self through fairy magic (and attempt to warn your father about his imminent fate, but he doesn't listen).
- Empire Earth: The final level of the Russian campaign sends the heroes back in time to the first level, but on the opposite side as they're there to stop Grigor Stoyanovich (the campaign's initial hero) before he can turn evil. Unfortunately, his successor also had access to the time machine, and is helping Grigor by bringing in troops from the future, two or three Technology Levels ahead of you. The mission ends without telling you whether the future changed for good or bad.
- Life is Strange:
- Midway through the game, Max discovers the ability to travel through photographs to earlier points in the game that were previously too far back to rewind to.
- One ending lets Max travel back to the confrontation in the bathroom where she first discovered her powers.
- Pac-Mania: When you take a long time to finish a level, Pac-Man will lose his ability to jump over ghosts, making the gameplay more like Pac-Man (1980) until you either lose a life or complete the level. Bonus points if you're playing in Pac-Man's Park when it happens; this level resembles the original game's maze.
- At the beginning of the final chapter of Sakura Wars (2019), Seijuro Kamiyama and Sakura Amamiya travel back to 1930 during the time of the Battle of Tokyo. It's also where Sakura takes her idol's place in the Action Prologue when she rescues her 1930 self from the demon.
- Space Quest IV: Roger Wilco and the Time Rippers has Roger steal a future-tech time-machine. One of the places he visits is Ulence Flats, from Space Quest I: The Sarien Encounter, the very first game of the series, complete with the original graphics, while he and the time machine remain in the then-modern graphics of the current game. This occurs after trips to Space Quest XII and X, which did not exist when SQ4 was published. The time machine also briefly appears in the VGA remake of Space Quest I, just after Roger takes off in a shuttle he bought. (Sadly, the Space Quest series ended at VI, so we never encounter a past version of Roger.)
Web Animation
- This is how Bonus Stage originally ended after a Creator Breakdown: Phil goes back to the first episode and kills his past self along with his costar, Joel, thus preventing the show from existing.
- Eddsworld: In "WTFuture", Edd's future self travels back in time to kill present Edd before they can experience a future where Cola is outlawed. He eventually decides to go further back in time for reinforcements, but undershoots a bit and ends up in a scene of the first "Zombeh Attack" episode, animation warts and all. Future Edd declines to help the suffering 2005 Matt because "Time paradoxes and stuff". Notably, Tord Larrson briefly returns to redub a line for his character that someone else had provided the voice for beforehand.
- Pokémon Rusty: After the Bidocalypse, Rusty is sent back to the first episode to stop himself from ever going on his Pokemon journey. He succeeds, but ends up doing everything all over again and failing to Set Right What Once Went Wrong.
- Talking Tom And Friends does this, with Tom and Ben travelling back in time to episodes from earlier in the season.
- In The Annoying Orange episode "Microwave Effect", the microwaving of a burrito that should never be microwaved sends Orange and the gang back in time to the events of the first episode, where they accidentally save Apple from getting knifed. However, they return to the present to see that their alteration of the past has made it so that Apple is now the ruler of the kitchen.
- Happy Tree Friends: In "Blast from the Past", Sniffles keeps traveling back in time to keep the other characters safe at the playground. Each time, he dismantles more of the playground. During his last travel, he tears down everything until the only thing the characters can do is ride the merry-go-round, which leads to the events of the first episode.
- Inanimate Insanity does this for the episode "Crappy Anniversary" which has the characters revert back to their more (poorly animated) early season 1 selfs, including having MePhone sound like Chris McLean again.
Webcomics
- Bob and George: While most of George's time travel involves events of 8-bit Mega Man (Classic) era, George has also been involved in past arcs of the strips.
- "Another Bad Time
" has George being sent back in time to investigate the arc Mega Man turned evil to find out what really was going on. It ultimately involved the Helmeted Author up to a nefarious scheme to destroy the comic.
- The last arc of the comic, "All Good Things", has George being shifting around the past, present and future. The past segment culminates in showing the original introduction of him and Bob arriving into the sprite comic portion in the first place.
- "Another Bad Time
- In Homestuck, at the end of the Game Over timeline John gains a power that makes him unstuck in the narrative, allowing him to travel to any point in the previous events of the story. At first he travels randomly through the narrative, witnessing a number of previous events such as Jake's kiss with Dirk's decapitated head. Eventually, he learns to control his powers and travels back to the end of Act 5, saving Vriska from being killed by Terezi. He also uses his retcon powers to disperse oil from his planet throughout the narrative. Several strips in this storyline show old strips from Acts 1-5 modified in this way, and the older panels depicted here really were altered to include the oil.
Web Videos
- The Angry Video Game Nerd: The "Mega Man Games" review has the Nerd being sent further in time to the events of previous episodes, first to his 2007 Independence Day episode, then to his 2006 A Nightmare On Elm Street review, before finally arriving in 2004 with his very first bad video game review, Dr Jekyll and Mr Hyde. He inspires himself to continue reviewing shitty video games in the first place.
- Everyman HYBRID:
- In the Mind Screw episode that is "The Property", many strange things happen to Vinnie. He's in a place that is, against all logic, a seamless combination of random rooms from his and his friend's homes in one, and then gets taken to Dr. Corenthal's ethereal sanctuary. This episode also somehow took him back in time to the events of "Hidden Videos", a video from two years prior, and he watches the events of that video happen from a distance, in shock at everything he's experiencing.
- Inverted in "Last week / taking it back", where through some unexplainable circumstances, Evan, Jeff and Alex mysteriously end up at Baldpate mountain. Based on evidence such as the clothes they're wearing and the location they ended up in, they were actually going through the events foretold in a mysterious video called "78of76.avi", received months earlier— they'd somehow gotten footage of something that happened to them in the future, and then lived those events in "Last week / taking it back".
- I'm a Marvel... And I'm a DC: Rorschach and Deadpool has the two go to the first episode, Deadpool wanting to travel to early episodes to mess with and roast the superheroes in the past.
- The Nostalgia Critic: In the Christmas with the Kranks review, the Nostalgia Critic is trying to put as little effort in the review as the movie had. Santa Christ sends him back to when he started reviewing in the first place, in 2007. The two Critics don't get along, but eventually learn from one another.
- Tribe Twelve: The Collective like to show their power over Noah by putting him through time-warp events. The most notable one happened in "The Live-Stream Incident", where he was taken back in time to two earlier episodes, "Device Analysis" and "Halloween Hotel", in which he caused some of the oddities that happened in those previous episodes, events that he, in the past, had been very confused and unsettled by.
Western Animation
- Ben 10: Omniverse: In "And Then There Was Ben", No Watch Ben and Professor Paradox go back in time to the pilot to get the Omnitrix to 10-year-old Ben. It's revealed that the reason the Omnitrix suddenly curved to go straight for past Ben in the original was because No Watch Ben had to hit it as Cannonbolt to change its direction to be closer towards past Ben.
- In The Chipmunks Go to the Movies episode "Back to Our Future", Alvin, Simon, and Theodore meet their counterparts from The Alvin Show thanks to a time machine by Clyde Crashcup of the original series. They even perform the 1962 song "The Alvin Twist" in a Battle of the Bands.
- Family Guy: The Season 10 episode "Back to the Pilot" has Stewie and Brian travel back in time to the first episode "Death Has a Shadow" so Brian can find his ball, noticing the oddities of the art style and Early-Installment Weirdness. Brian tries to stop 9-11 from happening, but it backfires.
- Futurama
- "The Why of Fry": The Brainspawn give Fry a chance to go back in time and stop himself being frozen, sending him under the same table he leaned against in "Space Pilot 3000". He and Nibbler talk while his past self is leaning, and Fry chooses to freeze himself by blowing his past self off the chair.
- "Bender's Big Score": Thanks to the paradox-free time code Fry and Bender are able to travel across history, eventually leading to Fry fleeing back to the same place and hour he got frozen to avoid the scammers shooting him, and Bender brainwashed to follow after and kill him. Bender is also revealed to be the one who flash-fossilized Seymour and behind the first alien invasion in the original Time-Passes Montage, while Fry falls into the same tube and is behind his pilot self defrosting in New Years' Eve 2999, pulling his pants up before freezing for another 7.95 years.
- The Kid vs. Kat two-part episode "Kat to the Future" revolves around Coop using Kat's time machine to go back to the first episode to stop Millie from finding and adopting Kat. He succeeds, but winds up causing a Bad Present where Kat's alien race has enslaved humanity with himself as ruler and Coop's friends, family, and neighbours becoming La Résistance. Coop then has to sneak into his house turned Kat's headquarters to retrieve the time machine to stop himself from causing this future to happen.
- My Little Pony: Friendship Is Magic: In "The Cutie Re-Mark", Starlight Glimmer travels back to the past to prevent the main six from becoming friends in the first place. She winds up in one of the flashbacks from "The Cutie Mark Chronicles", where she prevents young Rainbow Dash from performing her first Sonic Rainboom. Since the ripples of this change don't just prevent the main six from earning their cutie marks and befriending each other, but also result in various villains conquering Equestria, Twilight Sparkle has to time-travel back to prevent Starlight's meddling.
- Ninjago:
- In the Season 2 episode, "Wrong Place, Wrong Time", the ninja follow Garmadon back to the pilot episodes "Way of the Ninja", "The Golden Weapon", "King of Shadows", and "Weapons of Destiny", when Garmadon travels back in time using the Mega Weapon in an attempt to prevent his son from becoming the Green Ninja.
- In "Golden Hour", Wu has been struck by reversal time energy, and as a result, he and the Time Twins battle it out while teleporting through various moments in the show's history. These include Kai saving Lloyd in the Season 1 episode "The Green Ninja", the lead-up to an iconic Next Tier Power-Up sequence from the Season 2 episode "Island of Darkness", and a flashback from the Season 1 episode "Tick Tock" depicting young Garmadon's Start of Darkness.
- Phineas and Ferb: The episode "Phineas and Ferb's Quantum Boogaloo" sees Future-Candace go back in time to assist her past self in showing her mother that the boys were creating a roller-coaster, which was their first-ever invention seen in the series proper. Future-Candace eventually has to stop herself from doing it after discovering that it created a Bad Future.
- Regular Show:
- The episode "Bad Kiss" has Mordecai and Rigby using a time machine to travel back to prevent Mordecai from eating a chili dog that made his breath stink when trying to kiss Margaret. The plan goes haywire when the past Mordecai instead steals the time machine, with the duo chasing him through the events of the episodes "Camping Can Be Cool", "Ello Gov'nor", "Grave Sights", "Mordecai and the Rigbys", and "Just Set Up the Chairs".
- The last of the three part finale has the universe initially reset to the first episode of the series "The Power", it starts off exactly as that episode begins until halfway through the opening moments, Rigby realizes they've done it all before and what has happened. Eventually he manages to restore Mordecai's memories and they use The Power to go back to the fight between Pops and Anti-Pops. Also during the said fight Pops somehow gets flung back to the student film that first features him before making his way back to the battle.
- Samurai Jack: In the Grand Finale, Jack finally manages to return to the past from the Bad Future thanks to Ashi inheriting Aku's ability to send things through time. We see the original fight between Jack and Aku in the pilot, with the future Jack arriving about 10 seconds afterwards and annihilating the already tired and weaker Past Aku.
- The Simpsons: One clip in the episode "Lisa the Boy Scout" features an adult Bart going back in time to the ending of the very first episode to give predictions of the future to the past version of the family.
- The SpongeBob SquarePants special "SpongeBob and Patrick's Timeline Twist Up" has SpongeBob and Patrick travel back in time to various season 1 episodes in order to stop the Star family from accidentally changing history. The most notable scene is SpongeBob meeting his past self from "Help Wanted".
- In the Teen Titans Go! episode "Garage Sale" after selling their most valuable possessions from previous episodes at a garage sale, the Titans go down memory lane and travel back to the events of "Legendary Sandwich", "Pie Bros", "Artful Dodgers", and "I See You", in order to get those said possessions back.
- In the Wander Over Yonder episode "The Waste of Time", Wander and Sylvia accidentally buy Time Orbbles, giving them the ability of Time Travel. They briefly end up in the time of "The Picnic", the show's first aired episode (although continuity-wise the third); Sylvia, fortunately, stops Wander from greeting himself.