George and his colleagues are the few people on Earth with the ability to remember the events that are undone when time goes back. But when a freak accident harms someone close to George, Lazarus won’t let him turn back time to undo it unless there is the threat of global extinction. Now George must choose to stay loyal or go rogue as he faces the question: if you had the power to re-write your past, what would you sacrifice to do it?