After his girlfriend Holly is fatally shot during a violent struggle, nineteen-year-old Jackson uses his supernatural abilities and travels back in time two years, where he falls in love with Holly all over again, learns that his father is a spy, and discovers powerful enemies of time who will stop at nothing to recruit him for their own purposes.

As Jackson recovers from his brush with death, surrounded by his father, Courtney, Holly, and a few of the original time travelers, it becomes clear that they need to stop Thomas' and Dr. Ludwig's experiments at Eyewall Headquarters, triggering a war Jackson was born to fight.