A young conscript wants to return to his ordinary life, but his newfound ability to perceive changes in the timeline caused by time traveling rebels he is put on the front line. He must use his ability to stop the attacks before they rip the space time continuum to shreds and destroy the world.

Consider the following:
A young conscript (draftee) that already wants to retire. Find a word that describes his before arc state e.g., battle-weary.
A conscript of what army or campaign? Curious, his abilities put him on the front line of what Sci-Fi-related war?
What’s the goal of these time-traveling rebels?

This is what I can glean:
A conscript must use his precognitive abilities to stop time-traveling rebels from doing…

Hope you find this constructive – keep going!