Send Me Back

So the hero has spent some time trapped in another world (or another time, another universe, or even just another country). Initially, they just wanted to get home, but soon enough, they found himselves wrapped up in the other world's affairs. Then, all at once, they're returned home against their will. But there's a problem. The villain lives. The hero's friends in the other world are still fighting for their lives. That other world still needs saving. Nothing has been resolved. If their "other world" was another time (specifically the past), the hero may even find out that their friends all died and that the villain won. However, their original world doesn't appear to be in any danger (at least initially). The hero could stay there and live a normal life, forgetting about what happened in the other world altogether. What is their reaction to this? "Send me back!"

Most of the time, the hero will eventually find a way back to the other world to resolve things, but there are occasional subversions to this.

Compare Can't Stay Normal and So What Do We Do Now?. Occasionally overlaps with Save Both Worlds.

Anime and Manga
"Hikaru: This can't end this way!!!"
 * In Digimon Adventure, Taichi, having just defeated the villain of the arc, manages to return to his home world. Unfortunately, all his friends are still trapped in the Digital World. After receiving a garbled message indicating that they may be in trouble, Taichi finds a way to return to the Digital World in order to rescue them.
 * Right at the end of Higurashi no Naku Koro ni Kai, after escaping Hinamizawa to report the betrayal of  (the telephone lines had been cut within the village and there weren't cell phones back when the story takes place, so they had to actually leave the village to report this), Tomitake and Akasaka decide to return to Hinamizawa to continue fighting despite the deployment of Banken (an elite combat force that will hopefully save the day) and the danger to themselves.
 * Averted in Inuyasha. When Kagome first returns to her own time, she briefly considers attempting to go back to feudal Japan to help search for the shards of the Shikon no Tama. In the end, however, she decides to just pretend it was all a dream and ignore it.
 * Played straight in one of the movies. Inuyasha throws Kagome down the well to return her to the present, then blocks the well with a boulder so that she can't get back. She immediately tries to get back, but since the well is blocked in the past, it doesn't work.
 * The first season of Magic Knight Rayearth. The heroines have defeated the Big Bad Zagato, and freed Princess Emerald from her imprisonment so that she can return to being the Pillar of the World. The magical world saved, their mission fulfilled, the magic knights return to their own world. Good End..


 * A very brief example occurs in Mahou Sensei Negima when  The worst part:
 * Although part of the reason they were so quick to demand being returned is because they suspect the trip to be an illusion of some sort.
 * In Parallel Trouble Adventure Dual, Kazuki is at one point blasted back to his world mid-battle. Upon realizing what happened, he asks the scientist who sent him there in the first place, Ken Sanada, to send him back.

Literature

 * About halfway through Neverwhere, the hero gets back 'home', to upper London. He chooses to return to the adventure.
 * Three Hearts and Three Lions by Poul Anderson

Live-Action TV

 * In Doctor Who episode The Parting Of The Ways, Rose is trapped in the TARDIS by The Doctor and sent back to the twenty-first century, because "Emergency Program 1 means [The Doctor is] facing an enemy that should never be allowed to get their hands on [the TARDIS]." However, Rose won't take that for a good reason. She knows that the Doctor is going to die if he fights by himself, so she gets Jackie and Micky to help her crack the TARDIS so she can get back to the 2001st century -.
 * Life on Mars ends this way.

Video Games

 * Star Ocean: The Second Story: Claude accidentally lands on 'undeveloped planet' Expel and is stranded there. Though he sends out a distress signal, he later forgets about it... until his father's ship stumbles across it and tracks him down, teleporting him away from his friends . Naturally, Claude doesn't take it well.

Web Animation

 * At the end of Red Vs Blue Season Nine,
 * To this troper, this is also a terribly sad moment:

Western Animation

 * In Teen Titans, Cyborg at one point becomes trapped in the distant past. While in the past, he befriends the people of a barbarian tribe, who have been fighting off invading monsters. Then, during the final battle to defend the tribe and destroy the monsters once and for all, the other Titans manage to use magic to forcibly retrieve him from the past. His words as he arrives? "Send me back!" Unusual in that Cyborg does not actually return to the past, as (a) he has no way to get there, and (b) he finds out from a history book that the tribes won without him anyway.