History Main / SetRightWhatOnceWentWrong

22nd Apr '17 2:07:37 PM lalalei2001
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* In ''Literature/AllOurYesterdays'', this is Em's mission, and something she's failed at 14 times before the story properly begins.
19th Apr '17 6:47:21 AM Nintendoman01
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*''FanFic/RosarioVampireBrightestDarkness'': During the climax of Act III, Tsukune and his group all launch an attack on Kiria's facility to prevent him from using the Chrono Displacement spell to remake history [[InTheirOwnImage in his own image]]. Everything that can go wrong ''does'' go wrong, and everyone is killed in the ascent except Tsukune, who is himself mortally wounded by Kiria before Kiria himself is killed by Luna. Luna, having gone insane with grief as a result of Rason's death, is fully prepared to allow the world to be destroyed by the spell, which Kiria has succeeded in casting, but Tsukune manages to persuade her to instead change the date of the spell to one day in the past so he can go back and save everyone. With his knowledge of the future, Tsukune is able to ensure that everyone survives the attack.
9th Apr '17 9:29:10 AM nombretomado
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* This is one of the main plots in RogerZelazny's ''Literature/{{Roadmarks}}'', which has a road that travels from one end of time to another with off-ramps into various alternate histories. If an off-ramp doesn't get used, it eventually vanishes. The main protagonist, Red Dorakeen keeps trying to run modern firearms to the Battle of Marathon to change the outcome, thus re-creating an off-ramp that will allow him to find his lost home. At one point he sees Hitler, traveling in a VW Bug, "trying to find the place where he won."

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* This is one of the main plots in RogerZelazny's Creator/RogerZelazny's ''Literature/{{Roadmarks}}'', which has a road that travels from one end of time to another with off-ramps into various alternate histories. If an off-ramp doesn't get used, it eventually vanishes. The main protagonist, Red Dorakeen keeps trying to run modern firearms to the Battle of Marathon to change the outcome, thus re-creating an off-ramp that will allow him to find his lost home. At one point he sees Hitler, traveling in a VW Bug, "trying to find the place where he won."
9th Apr '17 9:12:17 AM nombretomado
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* The ''Peabody and Sherman'' segments of ''RockyAndBullwinkle'' involve going back in time to correct historical events which have gone wrong. This carries over to its reboot, ''WesternAnimation/TheNewMrPeabodyAndShermanShow''.

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* The ''Peabody and Sherman'' segments of ''RockyAndBullwinkle'' ''WesternAnimation/RockyAndBullwinkle'' involve going back in time to correct historical events which have gone wrong. This carries over to its reboot, ''WesternAnimation/TheNewMrPeabodyAndShermanShow''.
21st Mar '17 6:50:31 PM nombretomado
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* Throughout the early ''{{Nightside}}'' series, John Taylor [[spoiler: is pursued by the Harrowing, constructs sent from an AfterTheEnd future to kill him before he can begin investigating the Nightside's origins. A bit of a subversion, as it's implied the constructs' creators are motivated as much by bitterness and revenge as a need to avert What Went Wrong; else, they could've just sent someone to ''tell'' John his investigation would kick off an apocalypse, so he'd turn down the case.]]

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* Throughout the early ''{{Nightside}}'' ''{{Literature/Nightside}}'' series, John Taylor [[spoiler: is pursued by the Harrowing, constructs sent from an AfterTheEnd future to kill him before he can begin investigating the Nightside's origins. A bit of a subversion, as it's implied the constructs' creators are motivated as much by bitterness and revenge as a need to avert What Went Wrong; else, they could've just sent someone to ''tell'' John his investigation would kick off an apocalypse, so he'd turn down the case.]]
20th Mar '17 1:34:19 AM RandomnessUnlimited
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* The whole plot to the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' season 5 finale, "[[Recap/MyLittlePonyFriendshipIsMagicS5E25TheCutieRemarkPart1 The Cutie]] [[Recap/MyLittlePonyFriendshipIsMagicS5E26TheCutieRemarkPart2 Remark]]". Starlight Glimmer discovers and refines a time travel spell that Starswirl the Bearded had made and uses it in a mad revenge scheme to [[MakeWrongWhatOnceWentRight stop the Sonic Rainboom and prevent the Mane Six from uniting]]. Twilight Sparkle and Spike are stuck in a strange timeloop where FailureIsTheOnlyOption when they try to use force to stop Starlight in this plot. Ultimately, [[SheatheYourSword Twilight stops fighting and grabs Starlight to the next timeloop]] which ends up [[VillainousBreakdown breaks her badly]].

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* The whole plot to the ''WesternAnimation/MyLittlePonyFriendshipIsMagic'' season 5 finale, "[[Recap/MyLittlePonyFriendshipIsMagicS5E25TheCutieRemarkPart1 The Cutie]] [[Recap/MyLittlePonyFriendshipIsMagicS5E26TheCutieRemarkPart2 Remark]]". Starlight Glimmer discovers and refines a time travel spell that Starswirl the Bearded had made and uses it in a mad revenge scheme to [[MakeWrongWhatOnceWentRight stop the Sonic Rainboom and prevent the Mane Six from uniting]]. Twilight Sparkle and Spike are stuck in a strange timeloop where FailureIsTheOnlyOption when they try to use force to stop Starlight in this plot. Ultimately, [[SheatheYourSword Twilight stops fighting and grabs Starlight to the next timeloop]] which ends up [[VillainousBreakdown breaks breaking her badly]].badly]].
* ''WesternAnimation/{{Kaeloo}}'': The plot of Episode 75 had Kaeloo, Stumpy and Mr. Cat use their TimeMachine to [[NoFourthWall go back to the series pilot]] and prevent Quack Quack from getting addicted to [[GRatedDrug yogurt.]] Unfortunately, Stumpy ignores a warning from [[TheSmartGuy Mr. Cat]] telling him not to mess with the past, and he gives his past self information about what the future entails. When they return to the present, Stumpy is the king of Smileyland.
15th Mar '17 8:40:19 PM AthenaBlue
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** This doesn't work in the Whoniverse all the time. The Series 1 episode [[Recap/DoctorWhoS27E7FathersDay "Father's Day"]] establishes that some points in time can't be changed (known as fixed points, they are usually major historical events but they could be more personal ones) without causing disaster, but other points are in flux and can be changed to varying degrees.

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** This doesn't work in the Whoniverse all the time. The Series 1 episode [[Recap/DoctorWhoS27E7FathersDay [[Recap/DoctorWhoS27E8FathersDay "Father's Day"]] establishes that some points in time can't be changed (known as fixed points, they are usually major historical events but they could be more personal ones) without causing disaster, but other points are in flux and can be changed to varying degrees.
15th Mar '17 8:39:51 PM AthenaBlue
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* Naturally, ''Series/{{Life On Mars|2006}}'' and ''Series/AshesToAshes'' have played with this: in Sam's case, it was finding out why his father abandoned him, as well as arresting the serial killer who'd kidnapped his girlfriend and a crime lord who'd had a witness in his custody murdered; in Alex's, it was preventing her parents' death by car bomb. Their success rates are... varied; Sam eventually wound up ''convincing'' his father to skip town, because there was that little matter of a murder and racketeering charge if he stayed...
* ''Series/DoctorWho''
** This doesn't work in the Whoniverse all the time. The Series 1 episode "Father's Day" establishes that some points in time can't be changed (known as fixed points, they are usually major historical events but they could be more personal ones) without causing disaster, but other points are in flux and can be changed to varying degrees.
** Amy gets a chance to do it in a small way in the Series 5 finale -- not by time travelling, but because [[spoiler:the universe is being rebooted from her memories, so if she remembers something the way it was, she can have it back]].
** Not-quite-subverted in "Genesis of the Daleks". The Time Lords send the Doctor back in time to the creation of the Daleks, with the goal of either preventing their creation, or at least making them less aggressive. While there, the Doctor is captured by the Daleks' creator and is made to detail every Dalek vulnerability he knows about. Being the universe's resident expert on fighting Daleks, this would have been a catastrophe had he not [[NoPlansNoPrototypeNoBackup destroyed]] the tape before leaving the scene.

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* Naturally, ''Series/{{Life On Mars|2006}}'' ''Series/AshVsEvilDead'': The final two episodes of Season 2 see Ash and ''Series/AshesToAshes'' have played with this: company traveling back in Sam's case, it was finding out why his father abandoned him, as well as arresting time to the serial killer who'd kidnapped his girlfriend and a crime lord who'd had a witness days just before the events of [[Film/TheEvilDead1981 the original film]], in his custody murdered; in Alex's, it was preventing her parents' death by car bomb. Their success rates are... varied; Sam eventually wound up ''convincing'' his father an attempt to skip town, because there was that little matter of a murder and racketeering charge if he stayed...
* ''Series/DoctorWho''
** This doesn't work
stop Ash's younger self from ever reading from the ''Necronomicon'', in the Whoniverse hopes it will prevent all the time. The Series 1 episode "Father's Day" establishes evil and tragedy that's occurred ever since, up to and including [[spoiler: Pablo's recent death]].
* In ''Series/BabylonFive'', this is a key point in the 5 year plot -- instead of "Sometimes, trying to set right what once went wrong is what [[YouAlreadyChangedThePast sets everything wrong in the first place]], resulting in a StableTimeLoop.", everything will go wrong unless the heroes go back to keep what's right, creating a StableTimeLoop by altering the past to what it is. Which gets really confusing if you try to ask, "What happened the first time?" There are a few hints via dreams and a broadcast. It's said the Shadows' army would have been three times larger and more prone to act directly earlier.
* ''Series/DoctorWho'':
** [[Recap/DoctorWhoS2E9TheTimeMeddler "The Time Meddler"]]: This how the Monk in sees his own actions:
that some points in time can't be changed (known as fixed points, they are usually major historical events but they could be more personal ones) without causing disaster, but other points are in flux and can be changed to varying degrees.
** Amy
by reversing the outcome of the Battle of Hastings, he would ensure that England gets a chance to do it in a small way in better king -- Harold -- than the Series 5 finale one it actually got -- not William. The Doctor, however, is outraged by time travelling, but because [[spoiler:the universe is being rebooted from her memories, so if she remembers something the way it was, she can have it back]].
sheer recklessness of this action.
** Not-quite-subverted in [[Recap/DoctorWhoS12E4GenesisOfTheDaleks "Genesis of the Daleks".Daleks"]]. The Time Lords send the Doctor back in time to the creation of the Daleks, with the goal of either preventing their creation, or at least making them less aggressive. While there, the Doctor is captured by the Daleks' creator and is made to detail every Dalek vulnerability he knows about. Being the universe's resident expert on fighting Daleks, this would have been a catastrophe had he not [[NoPlansNoPrototypeNoBackup destroyed]] the tape before leaving the scene.



** This doesn't work in the Whoniverse all the time. The Series 1 episode [[Recap/DoctorWhoS27E7FathersDay "Father's Day"]] establishes that some points in time can't be changed (known as fixed points, they are usually major historical events but they could be more personal ones) without causing disaster, but other points are in flux and can be changed to varying degrees.
** Amy gets a chance to do it in a small way in [[Recap/DoctorWhoS31E13TheBigBang "The Big Bang"]] -- not by time travelling, but because [[spoiler:the universe is being rebooted from her memories, so if she remembers something the way it was, she can have it back]].



--> '''Amy:''' He wants to rescue Past Me from 36 years back, which means I'll [[RetGone cease to exist]]. Everything I've seen and done dissolves, time is rewritten.
--> '''Rory:''' That's... That's good, isn't it?
--> '''Amy:''' I will die. Another Amy will take my place, an Amy who never got trapped at Twostreams, who grew old with you, and she, in 36 years, won't be me. ([[spoiler:At first, it seems she's WrongTimeTravelSavvy, but the truth is slightly more complicated, along the lines of NeverTheSelvesShallMeet.]])
** This how the Monk in The Time Meddler sees his own actions: that by reversing the outcome of the Battle of Hastings, he would ensure that England gets a better king -- Harold -- than the one it actually got -- William. The Doctor, however, is outraged by the sheer recklessness of this action.
** The Series 9 opening two-parter "The Magician's Apprentice"/"The Witch's Familiar" hinges on the Doctor getting a chance to fix a huge mistake he made: [[spoiler: abandoning a young, frightened Davros -- who would create the Daleks as an adult -- on a Skaro battlefield instead of saving his life, which likely started him on the path to evil]]. The problem is, ''how'' will the Doctor fix the mistake at a point when he has nothing to lose: [[spoiler: save him and risk the Daleks, or kill him and risk his own soul and the universe's stability]]?
* In the ''Series/MirrorMirror'' series, there is exactly ''one'' person who was trained to do this exactly ''once'', as revealed in the final episode. Everything prior to this point had already happened in her mentor's past.
* In ''Series/BabylonFive'', this is a key point in the 5 year plot -- instead of "Sometimes, trying to set right what once went wrong is what [[YouAlreadyChangedThePast sets everything wrong in the first place]], resulting in a StableTimeLoop.", everything will go wrong unless the heroes go back to keep what's right, creating a StableTimeLoop by altering the past to what it is. Which gets really confusing if you try to ask, "What happened the first time?". There are a few hints via dreams and a broadcast. It's said the Shadow's army would have been three times larger and more prone to act directly earlier.
* More of a case of "Set right what we messed up" but in an episode of ''Series/HannahMontana'', Miley and Jackson travel back in time and mess up their parents meeting. Cue a back to the future style disappearance for Jackson as Miley tries to set things right. It was probably AllJustADream.
* Done in ''Series/PowerRangersTurbo'', with heavily debated success. A robot, the Blue Senturion, came from a thousand years in the future to warn the heros about a war two years later... and was intercepted by the villains, who took the message, and deleted it from his memory. Not only did the war still happen, but it happened a year earlier than scheduled. On the one hand, an all-out win for Team Evil was averted, but on the other, [[Series/PowerRangersInSpace it still didn't]] [[HeroicSacrifice end very]] [[BittersweetEnding happily]].
* This is Desmond's major character motivation throughout the third season of ''Series/{{Lost}}'' (apart from his desire to be reunited with his lost love Penny).

to:

--> '''Amy:''' -->'''Old Amy:''' He wants to rescue Past Me from 36 years back, which means I'll [[RetGone cease to exist]]. Everything I've seen and done dissolves, time is rewritten.
-->
rewritten.\\
'''Rory:''' That's... That's . . . That's good, isn't it?
--> '''Amy:'''
it?\\
'''Old Amy:'''
I will die. Another Amy will take my place, an Amy who never got trapped at Twostreams, Two Streams, who grew old with you, and she, in 36 years, won't be me. ([[spoiler:At first, it seems she's WrongTimeTravelSavvy, but the truth is slightly more complicated, along the lines of NeverTheSelvesShallMeet.]])
** This how the Monk in The Time Meddler sees his own actions: that by reversing the outcome of the Battle of Hastings, he would ensure that England gets a better king -- Harold -- than the one it actually got -- William. The Doctor, however, is outraged by the sheer recklessness of this action.
** The Series 9 opening two-parter [[Recap/DoctorWhoS35E1TheMagiciansApprentice "The Magician's Apprentice"/"The Apprentice"]]/[[Recap/DoctorWhoS35E2TheWitchsFamiliar "The Witch's Familiar" Familiar"]] hinges on the Doctor getting a chance to fix a huge mistake he made: [[spoiler: abandoning a young, frightened Davros -- who would create the Daleks as an adult -- on a Skaro battlefield instead of saving his life, which likely started him on the path to evil]]. The problem is, ''how'' will the Doctor fix the mistake at a point when he has nothing to lose: [[spoiler: save him and risk the Daleks, or kill him and risk his own soul and the universe's stability]]?
* In the ''Series/MirrorMirror'' series, there is exactly ''one'' person who was trained *** The answer turns out to do this exactly ''once'', as revealed be: [[spoiler:save him, and instill in the final episode. Everything prior to this point had already happened in her mentor's past.
* In ''Series/BabylonFive'', this is a key point in the 5 year plot -- instead
him some understanding of "Sometimes, trying to set right what once went wrong is what [[YouAlreadyChangedThePast sets everything wrong in the first place]], resulting in a StableTimeLoop.", everything mercy that will go wrong unless the heroes go back to keep what's right, creating eventually save Clara's life when she's trapped inside a StableTimeLoop Dalek casing by altering the past to what it is. Which gets really confusing if you try to ask, "What happened the first time?". There are a few hints via dreams and a broadcast. It's said the Shadow's army would have been three times larger and more prone to act directly earlier.
* More of a case of "Set right what we messed up" but
Missy in an episode of ''Series/HannahMontana'', Miley and Jackson travel back in time and mess up their parents meeting. Cue a back to the future style disappearance for Jackson as Miley tries to set things right. It was probably AllJustADream.
* Done in ''Series/PowerRangersTurbo'', with heavily debated success. A robot, the Blue Senturion, came from a thousand years in the future to warn the heros about a war two years later... and was intercepted by the villains, who took the message, and deleted it from his memory. Not only did the war still happen, but it happened a year earlier than scheduled. On the one hand, an all-out win for Team Evil was averted, but on the other, [[Series/PowerRangersInSpace it still didn't]] [[HeroicSacrifice end very]] [[BittersweetEnding happily]].
* This is Desmond's major character motivation throughout the third season of ''Series/{{Lost}}'' (apart from his desire to be reunited with his lost love Penny).
"The Witch's Familiar".]]



** Played straight in "Kansas" when the team accidentally goes back to Earth in 1985 and has to prevent John's father from going on the "Challenger" shuttle to prevent his death and John possibly never ending up on Moya.
* Guinan of ''Series/StarTrekTheNextGeneration'' is practically this trope walking personified (as for reasons that were never even hinted at until TheMovie, changes in the timeline do not affect her), especially in "Yesterday's Enterprise". More technically they don't entirely affect her. She could identify something was wrong, but didn't know what could have caused it.
** In "Tapestry", Q gives Picard the opportunity to avoid a BarBrawl in which he suffered a near-fatal wound to his heart, leading to getting an artificial heart that failed him in the beginning of the episode. [[ForWantOfANail Picard however finds that not being in the brawl drastically changed his future, as he's not a legendary captain, but a lowly lieutenant.]]
* The iconic ''[[Series/StarTrekTheOriginalSeries TOS]]'' episode "The City on the Edge of Forever": We see what's happened when [=McCoy=] goes through the Guardian: Edith Keeler starts a revolution, causing the Germans to win WWII, causing havoc and destruction throughout the timeline. Kirk and Spock must enter and make sure Keeler dies like she's supposed to. Of course, a little thing called love gets in the way...

to:

** Played straight in "Kansas" when the team accidentally goes back to Earth in 1985 and has to prevent John's father from going on the "Challenger" shuttle Space Shuttle ''Challenger'' to prevent his death and John possibly never ending up on Moya.
* Guinan In an episode of ''Series/StarTrekTheNextGeneration'' ''Series/TheFlash1990'', Barry Allen is practically accidentally thrust 10 years into a future where Central City has been taken over by his brother's killer, Nicholas Pike, and where an underground group of citizens were waiting for [[SecondComing the Flash to return]] in order to set things right.
** The [[Series/TheFlash2014 2014 series]] takes place in a timeline caused by the Reverse Flash [[MakeWrongWhatOnceWentRight traveling back in time to Barry's childhood and killing his mother]]. In
this trope walking personified (as for reasons that were never even hinted at until TheMovie, changes in timeline, Barry becomes the Flash several years earlier [[spoiler:thanks to the very same Reverse Flash needing Barry's access to the Speed Force]] than he was supposed to. Later, he gets several chances to fix the timeline do not affect her), especially in "Yesterday's Enterprise". More technically they don't entirely affect her. She could identify something was wrong, but didn't know what could have caused it.
** In "Tapestry", Q gives Picard
and save his mother, [[spoiler:but ends up letting the opportunity to avoid a BarBrawl in which he suffered a near-fatal wound to his heart, leading to getting an artificial heart that failed him in events play out and even helps the beginning pre-time-jump Reverse Flash get back onto the path of the episode. [[ForWantOfANail Picard however finds that not being in new timeline]].
** Later, after Barry accidentally runs into
the brawl drastically changed his future, [[spoiler:and witnesses Savitar kill Iris,]] he vows to do all in his power to prevent it from occurring, while also [[ScrewDestiny deciding to live his life and be happy for long as he's not a legendary captain, but a lowly lieutenant.he can. Savitar later reveals that it was Barry creating Flashpoint that gave Savitar the chance to break free of the prison Future!Barry put him in.]]
* The iconic ''[[Series/StarTrekTheOriginalSeries TOS]]'' In the second part of ''Series/TheFlipsideOfDominickHide'', "Another Flip For Dominick", Pyrus convinces himself that is what he is doing when he steps into history to foil a kidnapper. This forces Dominick to pursue him back and stop him before he completely screws things up.
* More of a case of "Set right what we messed up" but in an
episode "The City on of ''Series/HannahMontana'', Miley and Jackson travel back in time and mess up their parents meeting. Cue a back to the Edge future style disappearance for Jackson as Miley tries to set things right. It was probably AllJustADream.
* Discussed and strangely implemented in the "Time Jerker" episode
of Forever": We see what's happened when [=McCoy=] ''Series/HenryDanger''. Henry goes through a bad day where he is constantly being hurt or pranked. After a battle with the Guardian: Edith Keeler starts a revolution, causing titular bad guy, Henry goes back to the Germans to win WWII, causing havoc morning and destruction has to relive the same day over again. This time, he avoids all of the injuries and pranks, but messes up Jasper's model and keeps Charlotte from joining a special academic group. Ultimately, he realizes he has to go back and relive the day over again, suffering all of his ills so that his friends' accomplishments are restored.
* ''Series/KamenRiderDenO'' touches on this occasionally, in the context of "You are not supposed to do this".
** Kintaros nearly gets kicked off [=DenLiner=] in one episode when he tries to change a girls past for the better instead of dealing with the MonsterOfTheWeek (who was damaging the timeline himself in the meantime).
** Although it seems perfectly okay for them to change history in some cases but not in others. In one early episode, our heroes help a struggling musician make it to a gig which he had missed in the original timeline. He's convinced that had he not missed this gig, he'd be a star in the present. Turns out he's still a nobody even after they change history; the only difference is that he no longer blames himself for the breakup of his band. Since the change was so unimportant, our heroes are informed that what they did was okay.
** What the previous two events have in common is that the change prevented the [[MonsterOfTheWeek Imagin]] from making a DealWithTheDevil with that person in the first place. While Singularity Points negate ''some'' of the damage caused by an Imagin to the past, they only negate damage to things that were part of their memory and some things are lost for good. So completely negating the rampage ''better'' preserves the timeline than simply destroying the Imagin in the past, even if it requires a minor change. Strangely, this ''doesn't'' negate the fact the Imagin was destroyed though...
* In the NonSerialMovie of ''Series/KamenRiderKiva'', ''King of Hell Castle'', Wataru goes back in time in order to prevent a prison inmate from discovering the ruins of an ancient demon race and becoming their king. Unfortunately, his actions don't make any real difference, and in fact may have made it worse, given that when he returns to 2008, the creatures are roaming freely and the moon is covered by a gigantic monster eyeball.
* A late episode of ''Series/KaizokuSentaiGokaiger'' has Domon of the Series/MiraiSentaiTimeranger recruit the pirates to go back to 2010 to protect a shrine to obtain a Greater Power. This was used to pull an AuthorsSavingThrow concerning the team's appearance in ''Series/TensouSentaiGoseiger vs. ''[[Series/SamuraiSentaiShinkenger Shinkenger]]''. They complete the mission, but realize they didn't get the power. The shrine becomes a ChekhovsGun as it holds [[Series/NinjaSentaiKakuranger the missing Ninjaman]].
* Naturally, ''Series/{{Life On Mars|2006}}'' and ''Series/AshesToAshes'' have played with this: in Sam's case, it was finding out why his father abandoned him, as well as arresting the serial killer who'd kidnapped his girlfriend and a crime lord who'd had a witness in his custody murdered; in Alex's, it was preventing her parents' death by car bomb. Their success rates are... varied; Sam eventually wound up ''convincing'' his father to skip town, because there was that little matter of a murder and racketeering charge if he stayed...
* This is Desmond's major character motivation
throughout the timeline. Kirk and Spock must enter and make sure Keeler dies like she's supposed to. Of course, a little thing called third season of ''Series/{{Lost}}'' (apart from his desire to be reunited with his lost love gets Penny).
* In the series ''Series/MirrorMirror'', there is exactly ''one'' person who was trained to do this exactly ''once'', as revealed
in the way...final episode. Everything prior to this point had already happened in her mentor's past.
* The ''Series/MysteriousWays'' episode "Yesterday" deals with a police officer who relives the previous day after accidentally shooting and killing his partner and praying for some way to make it right.



* ''Series/{{Supernatural}}'':
** In "In The Beginning", Dean ''thinks'' that his jump into the past is to set right what once went wrong (Castiel all but states it outright), but not only does it turn out he was only meant to ''witness'' what went wrong and not change it, it sure looks like he actually ''caused'' it.
** "The Song Remains The Same" had an angel go back to that time to try to kill their mother before they were born. While she seemingly succeeds in killing their father, he is brought back as a vessel for Archangel Michael, who kills the angel.
** In "As Time Goes By", Henry wants to return to 1958 to stop Abaddon and be a father to John, but Dean fears that it'll have an unforeseen consequence and stops him by force. Although even Dean is taken aback when Henry points out that his return would mean that the Apocalypse and all the other [[SealedEvilInACan sealed evils]] that have killed thousands of people would never have been released.

to:

* ''Series/{{Supernatural}}'':
** In "In The Beginning", Dean ''thinks'' that
Done in ''Series/PowerRangersTurbo'', with heavily debated success. A robot, the Blue Senturion, came from a thousand years in the future to warn the heros about a war two years later... and was intercepted by the villains, who took the message, and deleted it from his jump into memory. Not only did the past is war still happen, but it happened a year earlier than scheduled. On the one hand, an all-out win for Team Evil was averted, but on the other, [[Series/PowerRangersInSpace it still didn't]] [[HeroicSacrifice end very]] [[BittersweetEnding happily]].
* In ''Series/{{Primeval}}'', Matt spends the majority of season four and five doing this
to set right prevent a BadFuture. [[spoiler:Although, as he doesn't know exactly what once went wrong (Castiel all but states it outright), but not only does it turn wrong, and doesn't find out he was only meant to ''witness'' what went wrong until halfway through season five, he spends most of the time tracking the wrong person and not change it, it sure looks like he actually ''caused'' it.
** "The Song Remains The Same" had
helping prevent a bad present.]]
* There was
an angel go episode of ''Series/{{Roswell}}'' where a Max Evans from the future uses the Granilith to travel back to that time the present to try to kill break up his past self and Liz, because by staying together it results in all their mother before they were born. While she seemingly succeeds in killing deaths at the hands of their father, he enemies, 14 years from now.
* Two episodes of ''Series/SeaQuestDSV'' involve TimeTravel and plots to fix the timeline. In the first case, the submarine
is brought back as to a vessel for Archangel Michael, who kills BadFuture, where a plague has wiped out most of humanity, with the angel.
** In "As Time Goes By", Henry wants to return to 1958 to stop Abaddon
rest of the people staying at home and be playing video games using real HumongousMecha. By the end, only two humans are left in the world (the rest are killed by the "video games"): [[AdamAndEvePlot a father to John, but Dean fears that it'll have an unforeseen consequence boy and stops him a girl]]. The AI controlling the world brings the ''[=seaQuest=]'' crew to the future to try to get the survivors to repopulate the species. However, to do that, they need to [[spoiler:remove their dependence on the very same AI by force. Although even Dean shutting it off permanently]]. As [[TeenGenius Lucas]] [[TimeyWimeyBall tries to explain]], the way time works is taken aback when Henry points out that his return would mean that the Apocalypse future and all the other [[SealedEvilInACan sealed evils]] past are in a StableTimeLoop of sorts, and, by saving the future, they're ensuring their own past.
** The second example has a reactor instability result in a [[NegativeSpaceWedgie Negative Sea Wedgie]] sending the sub into the middle of the [[UsefulNotes/HistoryOfTheColdWar Cuban Missile Crisis]]. Or, rather, the first time jump has the sub arrive days after the crisis goes apeship, and the superpowers nuke the world. They find a lone yacht at sea with a naval officer dying from radiation explaining what went wrong during the crisis. The sub then jumps back a few days and tries to ensure
that have killed thousands events are put back on course as they remember from their history lessons. Specifically, an American sub ends up being out of people would never have been released.position and assumes that a Soviet ship has already crossed the line, when, in fact, it's miles away from it. The attack on the ship would've started WorldWarThree. The ''[=seaQuest=]'' manages to intercept the torpedo and uses the command codes provided by the same officer to order the US sub back in position.



* ''Series/TheXFiles'' episode "Synchrony" presents the case of a strange old man warning an MIT student and professor that the student is going to die at a specific time -- because of this warning the professor, attempting to save the student, ends up accidentally pushing him into the path of an oncoming bus and thus the warning is a SelfFulfillingProphecy. The old man is [[spoiler: actually the professor from the future, who has traveled back in time]] attempting to Set Right What Will Go Wrong and prevent an impending scientific breakthrough [[spoiler: that would be made by the professor in collaboration with his girlfriend, also a scientist, and the student, and which would be a catalyst for a catastrophic technological development.]] Mulder cites an old theory of Scully's about how YouCantFightFate, and so the old man's efforts are probably doomed. [[spoiler: Although the professor manages to kill both his present and future selves and erase all of his files, as the episode ends, the girlfriend is continuing the research on her own with backups of the erased data.]]

to:

* ''Series/TheXFiles'' Guinan of ''Series/StarTrekTheNextGeneration'' is practically this trope walking personified (as for reasons that were never even hinted at until TheMovie, changes in the timeline do not affect her), especially in "Yesterday's Enterprise". More technically they don't entirely affect her. She could identify something was wrong, but didn't know what could have caused it.
** In "Tapestry", Q gives Picard the opportunity to avoid a BarBrawl in which he suffered a near-fatal wound to his heart, leading to getting an artificial heart that failed him in the beginning of the episode. [[ForWantOfANail Picard however finds that not being in the brawl drastically changed his future, as he's not a legendary captain, but a lowly lieutenant.]]
* The iconic ''[[Series/StarTrekTheOriginalSeries TOS]]''
episode "Synchrony" presents "The City on the case Edge of Forever": We see what's happened when [=McCoy=] goes through the Guardian: Edith Keeler starts a strange old man warning an MIT student revolution, causing the Germans to win WWII, causing havoc and professor that destruction throughout the student is going to die at timeline. Kirk and Spock must enter and make sure Keeler dies like she's supposed to. Of course, a specific time -- because of this warning little thing called love gets in the professor, attempting to save the student, ends up accidentally pushing him into the path of an oncoming bus and thus the warning is a SelfFulfillingProphecy. The old man is [[spoiler: actually the professor from the future, who has traveled back in time]] attempting to Set Right What Will Go Wrong and prevent an impending scientific breakthrough [[spoiler: that would be made by the professor in collaboration with his girlfriend, also a scientist, and the student, and which would be a catalyst for a catastrophic technological development.]] Mulder cites an old theory of Scully's about how YouCantFightFate, and so the old man's efforts are probably doomed. [[spoiler: Although the professor manages to kill both his present and future selves and erase all of his files, as the episode ends, the girlfriend is continuing the research on her own with backups of the erased data.]]way...



* In an episode of ''Series/TheFlash1990'', Barry Allen is accidentally thrust 10 years into a future where Central City has been taken over by his brother's killer, Nicholas Pike, and where an underground group of citizens were waiting for [[SecondComing the Flash to return]] in order to set things right.
** The [[Series/TheFlash2014 2014 series]] takes place in a timeline caused by the Reverse Flash [[MakeWrongWhatOnceWentRight traveling back in time to Barry's childhood and killing his mother]]. In this timeline, Barry becomes the Flash several years earlier [[spoiler:thanks to the very same Reverse Flash needing Barry's access to the Speed Force]] than he was supposed to. Later, he gets several chances to fix the timeline and save his mother, [[spoiler:but ends up letting the events play out and even helps the pre-time-jump Reverse Flash get back onto the path of the new timeline]].
** Later, after Barry accidentally runs into the future, [[spoiler:and witnesses Savitar kill Iris,]] he vows to do all in his power to prevent it from occurring, while also [[ScrewDestiny deciding to live his life and be happy for long as he can. Savitar later reveals that it was Barry creating Flashpoint that gave Savitar the chance to break free of the prison Future!Barry put him in.]]
* ''Series/KamenRiderDenO'' touches on this occasionally, in the context of "You are not supposed to do this".
** Kintaros nearly gets kicked off [=DenLiner=] in one episode when he tries to change a girls past for the better instead of dealing with the MonsterOfTheWeek (who was damaging the timeline himself in the meantime).
** Although it seems perfectly okay for them to change history in some cases but not in others. In one early episode, our heroes help a struggling musician make it to a gig which he had missed in the original timeline. He's convinced that had he not missed this gig, he'd be a star in the present. Turns out he's still a nobody even after they change history; the only difference is that he no longer blames himself for the breakup of his band. Since the change was so unimportant, our heroes are informed that what they did was okay.
** What the previous two events have in common is that the change prevented the [[MonsterOfTheWeek Imagin]] from making a DealWithTheDevil with that person in the first place. While Singularity Points negate ''some'' of the damage caused by an Imagin to the past, they only negate damage to things that were part of their memory and some things are lost for good. So completely negating the rampage ''better'' preserves the timeline than simply destroying the Imagin in the past, even if it requires a minor change. Strangely, this ''doesn't'' negate the fact the Imagin was destroyed though...
* In the NonSerialMovie of ''Series/KamenRiderKiva'', ''King of Hell Castle'', Wataru goes back in time in order to prevent a prison inmate from discovering the ruins of an ancient demon race and becoming their king. Unfortunately, his actions don't make any real difference, and in fact may have made it worse, given that when he returns to 2008, the creatures are roaming freely and the moon is covered by a gigantic monster eyeball.
* In ''Series/{{Primeval}}'', Matt spends the majority of season four and five doing this to prevent a BadFuture. [[spoiler:Although, as he doesn't know exactly what went wrong, and doesn't find out what went wrong until halfway through season five, he spends most of the time tracking the wrong person and helping prevent a bad present.]]
* The ''Series/MysteriousWays'' episode "Yesterday" deals with a police officer who relives the previous day after accidentally shooting and killing his partner and praying for some way to make it right.
* There was an episode of ''{{Roswell}}'' where a Max Evans from the future uses the Granilith to travel back to the present to break up his past self and Liz, because by staying together it results in all their deaths at the hands of their enemies, 14 years from now.
* In the second part of ''Series/TheFlipsideOfDominickHide'', "Another Flip For Dominick", Pyrus convinces himself that is what he is doing when he steps into history to foil a kidnapper. This forces Dominick to pursue him back and stop him before he completely screws things up.
* A late episode of ''Series/KaizokuSentaiGokaiger'' has Domon of the Series/MiraiSentaiTimeranger recruit the pirates to go back to 2010 to protect a shrine to obtain a Greater Power. This was used to pull an AuthorsSavingThrow concerning the team's appearance in ''Series/TensouSentaiGoseiger vs. ''[[Series/SamuraiSentaiShinkenger Shinkenger]]''. They complete the mission, but realize they didn't get the power. The shrine becomes a ChekhovsGun as it holds [[Series/NinjaSentaiKakuranger the missing Ninjaman]].
* Two episodes of ''Series/SeaQuestDSV'' involve TimeTravel and plots to fix the timeline. In the first case, the submarine is brought to a BadFuture, where a plague has wiped out most of humanity, with the rest of the people staying at home and playing video games using real HumongousMecha. By the end, only two humans are left in the world (the rest are killed by the "video games"): [[AdamAndEvePlot a boy and a girl]]. The AI controlling the world brings the ''[=seaQuest=]'' crew to the future to try to get the survivors to repopulate the species. However, to do that, they need to [[spoiler:remove their dependence on the very same AI by shutting it off permanently]]. As [[TeenGenius Lucas]] [[TimeyWimeyBall tries to explain]], the way time works is that the future and the past are in a StableTimeLoop of sorts, and, by saving the future, they're ensuring their own past.
** The second example has a reactor instability result in a [[NegativeSpaceWedgie Negative Sea Wedgie]] sending the sub into the middle of the [[UsefulNotes/HistoryOfTheColdWar Cuban Missile Crisis]]. Or, rather, the first time jump has the sub arrive days after the crisis goes apeship, and the superpowers nuke the world. They find a lone yacht at sea with a naval officer dying from radiation explaining what went wrong during the crisis. The sub then jumps back a few days and tries to ensure that events are put back on course as they remember from their history lessons. Specifically, an American sub ends up being out of position and assumes that a Soviet ship has already crossed the line, when, in fact, it's miles away from it. The attack on the ship would've started WorldWarThree. The ''[=seaQuest=]'' manages to intercept the torpedo and uses the command codes provided by the same officer to order the US sub back in position.
* Discussed and strangely implemented in the "Time Jerker" episode of ''Series/HenryDanger''. Henry goes through a bad day where he is constantly being hurt or pranked. After a battle with the titular bad guy, Henry goes back to the morning and has to relive the same day over again. This time, he avoids all of the injuries and pranks, but messes up Jasper's model and keeps Charlotte from joining a special academic group. Ultimately, he realizes he has to go back and relive the day over again, suffering all of his ills so that his friends' accomplishments are restored.
* ''Series/AshVsEvilDead'': The final two episodes of Season 2 see Ash and company traveling back in time to the days just before the events of [[Film/TheEvilDead1981 the original film]], in an attempt to stop Ash's younger self from ever reading from the ''Necronomicon'', in the hopes it will prevent all the evil and tragedy that's occurred ever since, up to and including [[spoiler: Pablo's recent death]].

to:

* ''Series/{{Supernatural}}'':
**
In an episode of ''Series/TheFlash1990'', Barry Allen is accidentally thrust 10 years into a future where Central City has been taken over by "In The Beginning", Dean ''thinks'' that his brother's killer, Nicholas Pike, and where an underground group of citizens were waiting for [[SecondComing the Flash to return]] in order to set things right.
** The [[Series/TheFlash2014 2014 series]] takes place in a timeline caused by the Reverse Flash [[MakeWrongWhatOnceWentRight traveling back in time to Barry's childhood and killing his mother]]. In this timeline, Barry becomes the Flash several years earlier [[spoiler:thanks to the very same Reverse Flash needing Barry's access to the Speed Force]] than he was supposed to. Later, he gets several chances to fix the timeline and save his mother, [[spoiler:but ends up letting the events play out and even helps the pre-time-jump Reverse Flash get back onto the path of the new timeline]].
** Later, after Barry accidentally runs
jump into the future, [[spoiler:and witnesses Savitar kill Iris,]] he vows to do all in his power to prevent it from occurring, while also [[ScrewDestiny deciding to live his life and be happy for long as he can. Savitar later reveals that it was Barry creating Flashpoint that gave Savitar the chance to break free of the prison Future!Barry put him in.]]
* ''Series/KamenRiderDenO'' touches on this occasionally, in the context of "You are not supposed to do this".
** Kintaros nearly gets kicked off [=DenLiner=] in one episode when he tries to change a girls
past for the better instead of dealing with the MonsterOfTheWeek (who was damaging the timeline himself in the meantime).
** Although
is to set right what once went wrong (Castiel all but states it seems perfectly okay for them to change history in some cases outright), but not in others. In one early episode, our heroes help a struggling musician make it to a gig which he had missed in the original timeline. He's convinced that had he not missed this gig, he'd be a star in the present. Turns out he's still a nobody even after they change history; the only difference is that does it turn out he no longer blames himself for the breakup of his band. Since the change was so unimportant, our heroes are informed that what they did was okay.
** What the previous two events have in common is that the change prevented the [[MonsterOfTheWeek Imagin]] from making a DealWithTheDevil with that person in the first place. While Singularity Points negate ''some'' of the damage caused by an Imagin to the past, they
only negate damage meant to things that were part of their memory and some things are lost for good. So completely negating the rampage ''better'' preserves the timeline than simply destroying the Imagin in the past, even if it requires a minor change. Strangely, this ''doesn't'' negate the fact the Imagin was destroyed though...
* In the NonSerialMovie of ''Series/KamenRiderKiva'', ''King of Hell Castle'', Wataru goes back in time in order to prevent a prison inmate from discovering the ruins of an ancient demon race and becoming their king. Unfortunately, his actions don't make any real difference, and in fact may have made it worse, given that when he returns to 2008, the creatures are roaming freely and the moon is covered by a gigantic monster eyeball.
* In ''Series/{{Primeval}}'', Matt spends the majority of season four and five doing this to prevent a BadFuture. [[spoiler:Although, as he doesn't know exactly what went wrong, and doesn't find out
''witness'' what went wrong until halfway through season five, and not change it, it sure looks like he spends most of the actually ''caused'' it.
** "The Song Remains The Same" had an angel go back to that
time tracking to try to kill their mother before they were born. While she seemingly succeeds in killing their father, he is brought back as a vessel for Archangel Michael, who kills the wrong person angel.
** In "As Time Goes By", Henry wants to return to 1958 to stop Abaddon
and helping prevent be a bad present.]]
father to John, but Dean fears that it'll have an unforeseen consequence and stops him by force. Although even Dean is taken aback when Henry points out that his return would mean that the Apocalypse and all the other [[SealedEvilInACan sealed evils]] that have killed thousands of people would never have been released.
* The ''Series/MysteriousWays'' ''Series/TheXFiles'' episode "Yesterday" deals with a police officer who relives "Synchrony" presents the previous day after case of a strange old man warning an MIT student and professor that the student is going to die at a specific time -- because of this warning the professor, attempting to save the student, ends up accidentally shooting pushing him into the path of an oncoming bus and killing his partner and praying for some way to make it right.
* There was an episode of ''{{Roswell}}'' where
thus the warning is a Max Evans SelfFulfillingProphecy. The old man is [[spoiler: actually the professor from the future uses the Granilith to travel back to the present to break up his past self and Liz, because by staying together it results in all their deaths at the hands of their enemies, 14 years from now.
* In the second part of ''Series/TheFlipsideOfDominickHide'', "Another Flip For Dominick", Pyrus convinces himself that is what he is doing when he steps into history to foil a kidnapper. This forces Dominick to pursue him back and stop him before he completely screws things up.
* A late episode of ''Series/KaizokuSentaiGokaiger'' has Domon of the Series/MiraiSentaiTimeranger recruit the pirates to go back to 2010 to protect a shrine to obtain a Greater Power. This was used to pull an AuthorsSavingThrow concerning the team's appearance in ''Series/TensouSentaiGoseiger vs. ''[[Series/SamuraiSentaiShinkenger Shinkenger]]''. They complete the mission, but realize they didn't get the power. The shrine becomes a ChekhovsGun as it holds [[Series/NinjaSentaiKakuranger the missing Ninjaman]].
* Two episodes of ''Series/SeaQuestDSV'' involve TimeTravel and plots to fix the timeline. In the first case, the submarine is brought to a BadFuture, where a plague has wiped out most of humanity, with the rest of the people staying at home and playing video games using real HumongousMecha. By the end, only two humans are left in the world (the rest are killed by the "video games"): [[AdamAndEvePlot a boy and a girl]]. The AI controlling the world brings the ''[=seaQuest=]'' crew to the future to try to get the survivors to repopulate the species. However, to do that, they need to [[spoiler:remove their dependence on the very same AI by shutting it off permanently]]. As [[TeenGenius Lucas]] [[TimeyWimeyBall tries to explain]], the way time works is that the future and the past are in a StableTimeLoop of sorts, and, by saving
the future, they're ensuring their own past.
** The second example
who has a reactor instability result traveled back in a [[NegativeSpaceWedgie Negative Sea Wedgie]] sending time]] attempting to Set Right What Will Go Wrong and prevent an impending scientific breakthrough [[spoiler: that would be made by the sub into the middle of the [[UsefulNotes/HistoryOfTheColdWar Cuban Missile Crisis]]. Or, rather, the first time jump has the sub arrive days after the crisis goes apeship, professor in collaboration with his girlfriend, also a scientist, and the superpowers nuke student, and which would be a catalyst for a catastrophic technological development.]] Mulder cites an old theory of Scully's about how YouCantFightFate, and so the world. They find a lone yacht at sea with a naval officer dying from radiation explaining what went wrong during old man's efforts are probably doomed. [[spoiler: Although the crisis. The sub then jumps back a few days and tries to ensure that events are put back on course as they remember from their history lessons. Specifically, an American sub ends up being out of position and assumes that a Soviet ship has already crossed the line, when, in fact, it's miles away from it. The attack on the ship would've started WorldWarThree. The ''[=seaQuest=]'' professor manages to intercept the torpedo kill both his present and uses the command codes provided by the same officer to order the US sub back in position.
* Discussed
future selves and strangely implemented in the "Time Jerker" episode of ''Series/HenryDanger''. Henry goes through a bad day where he is constantly being hurt or pranked. After a battle with the titular bad guy, Henry goes back to the morning and has to relive the same day over again. This time, he avoids all of the injuries and pranks, but messes up Jasper's model and keeps Charlotte from joining a special academic group. Ultimately, he realizes he has to go back and relive the day over again, suffering erase all of his ills so that his friends' accomplishments are restored.
* ''Series/AshVsEvilDead'': The final two episodes of Season 2 see Ash and company traveling back in time to
files, as the days just before episode ends, the events of [[Film/TheEvilDead1981 girlfriend is continuing the original film]], in an attempt to stop Ash's younger self from ever reading from research on her own with backups of the ''Necronomicon'', in the hopes it will prevent all the evil and tragedy that's occurred ever since, up to and including [[spoiler: Pablo's recent death]].erased data.]]
15th Mar '17 6:39:50 AM ChronoLegion
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** Later, after Barry accidentally runs into the future, [[spoiler: and witnesses Savitar kill Iris,]] he vows to do all in his power to prevent it from occruing, while also [[ScrewDestiny deciding to live his life and be happy for long as he can.]]

to:

** Later, after Barry accidentally runs into the future, [[spoiler: and [[spoiler:and witnesses Savitar kill Iris,]] he vows to do all in his power to prevent it from occruing, occurring, while also [[ScrewDestiny deciding to live his life and be happy for long as he can.can. Savitar later reveals that it was Barry creating Flashpoint that gave Savitar the chance to break free of the prison Future!Barry put him in.]]
14th Mar '17 7:41:25 PM CosmicFerret
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* Manga/{{Amakusa 1637}} is built around this trope. Six schoolers from modern Kobe end up thrown in the Nagasaki of 1637, few before the failed JapaneseChristian rebellion of Shiro Amakusa; once they reunite and assess their situation, they decide to pull this trope to avert such tragedy. [[spoiler: It works.]]

to:

* Manga/{{Amakusa 1637}} is built around this trope. Six schoolers from modern Kobe end up thrown in the Nagasaki of 1637, few before the failed JapaneseChristian UsefulNotes/JapaneseChristian rebellion of Shiro Amakusa; once they reunite and assess their situation, they decide to pull this trope to avert such tragedy. [[spoiler: It works.]]
This list shows the last 10 events of 296. Show all.
http://tvtropes.org/pmwiki/article_history.php?article=Main.SetRightWhatOnceWentWrong