You only live once. Or do you? Maybe -- just maybe -- it's not that simple.

When Peter runs out in the street and gets killed by a car, he is greeted in the afterlife by a voice that shares the opportunity of a lifetime. It gives him the chance to try again: Peter can go back to any point during his past life, begin from there, and work to change events so that he doesn't wind up under that car. Best of all, he gets to remember everything as he goes along.

The first time he goes back, he thinks it's a cinch. The second time, he figures he should be a little more careful -- he doesn't know how many chances he'll be given. Maybe he needs to confront a few old issues -- like breaking through to his adoptive parents, standing up to the school bully, and learning how to trust his own talents. But the clock is already ticking. Can Peter really manage to change his whole life in time to prevent his own tragic -- and final -- death?