A curious scientist travels back in time to prevent a tragedy, but when their actions threaten the fabric of time, they must sacrifice their chance to change the past and destroy the time travel device, only to discover that the tragic event was necessary for a greater good.
Protagonist: A curious scientist who wants to use time travel to change a tragic event in their past; Antagonist: A power-hungry government official who wants to control the time travel device for their own gain.
The protagonist successfully travels back in time to try and prevent a tragedy, but their actions have unforeseen consequences that threaten the fabric of time itself.
As the protagonist desperately tries to fix the damage they've caused, the government official's greed leads to the time travel device malfunctioning and creating a time loop. The protagonist realizes that they must sacrifice their chance to change the past in order to save the future. With a heavy heart, they destroy the device, ensuring that time remains intact.
Twist: The protagonist discovers that the tragic event they were trying to prevent was actually necessary for a greater good, and by stopping it, they inadvertently caused an even worse outcome. They must now find a way to undo their actions and restore the original timeline without the time travel device.