A 22nd century historian accidentally gets stuck in the past and forms an alliance with rebels to confront a rival time-traveler, but upon returning to their own time, they discover their actions have altered the future, leading to a new timeline they must navigate and set right.
Protagonist: A historian from the 22nd century who accidentally gets stuck in the past; Antagonist: A rival time-traveler who wants to change history for their own benefit.
The protagonist forms an unexpected alliance with a group of rebels in the past, leading to a dangerous confrontation with the antagonist and their followers as they fight to preserve the timeline.
In the final showdown, the protagonist and the rebels manage to outwit the antagonist and their followers, preserving the timeline and ensuring that history unfolds as it should. Using their knowledge of the future, the protagonist finds a way to return to their own time, but not before leaving behind a message for the rebels to inspire them to continue fighting for their cause. As the protagonist steps back into the 22nd century, they realize that their experience in the past has forever changed them, and they are determined to use their knowledge to make a positive impact on the future.
Twist: As the protagonist returns to the 22nd century, they discover that their actions in the past have inadvertently altered the future, creating a new timeline that is vastly different from the one they left behind. Now, they must navigate this unfamiliar world and find a way to set things right before it's too late.