Seventeen-year-old Lucas is a star hockey player who's headed for the marines as soon as high school is over. Then there's Juliet, straight-A student and rigorous debater, whose college trajectory has been carefully planned for years. They couldn't be more different. But from the moment Lucas sees Juliet, he swears he remembers their first kiss. Their first dance. Their first fight. In fact, Lucas knows everything that's going to happen between them - not because he can predict the future, but because he claims to have already lived it.

Juliet doesn't know whether to be afraid for herself - or for Lucas. Because as Lucas's memories occur more frequently, they also grow more ominous. All Juliet wants is for Lucas to be safe with her in the present. But how do you hold onto someone you love now when they've begun slipping away from you in the future?