Variel Martinez has been dreading today for the past fifty-five years: the day her younger self is going to attack her.

She works as a supervisor at the Temporal Security Administration, an agency tasked with safeguarding the timeline while tourists and businesspeople hop hundreds of years into the past or future. But despite her best efforts to prepare her subordinates and stop what she knows is coming, the timeline can’t be changed.

A young terrorist bursts through a time gate. She exchanges fire with Variel’s coworkers. When they corner her, she takes Variel hostage at gunpoint.

Her colleagues quickly learn that the terrorist is Variel’s revolutionary younger self, and that she’s on an all-or-nothing mission to prevent the end of the world. She steals Variel away to a dangerous past where love, heartache, and loss force her to ask herself: is this still my fight?