"A curious teenager discovers a time-traveling portal in a cave, but when their actions in the past have unintended consequences in the present, they must confront a time-traveling criminal and a shocking twist that forces them to make a difficult decision about the future of history."
Protagonist: A curious teenager who accidentally discovers the portal and wants to use it to change the course of history for the better; Antagonist: A time-traveling criminal who seeks to disrupt the timeline and create chaos.
The protagonist realizes that their actions in the past have unintended consequences in the present, leading to a moral dilemma and a difficult decision about how to proceed with their time-traveling abilities.
The protagonist ultimately decides to use their time-traveling abilities to undo the damage caused by their actions, and they work to restore the timeline to its original state. In the process, they confront the antagonist and prevent them from further disrupting history. The protagonist learns valuable lessons about the consequences of their actions and the importance of respecting the natural flow of time.
Twist: The protagonist discovers that the antagonist is actually a future version of themselves, driven to disrupt the timeline in order to prevent a catastrophic event. This revelation forces the protagonist to consider whether they should continue trying to restore the timeline, or if they should embrace their future self's mission to change history for the better.