The series centers around Dan Vasser, a normal man who, for an unknown reason, begins jumping back in time. He soon learns that each series of jumps follows the life of a person whose destiny he seems meant to change, although it doesn't always turn out for the better. While in the past, Dan reconnects with Livia Beale, his ex-fiancée, whom he lost in a plane crash. And Dan may find that Livia has a secret life of her own. (wikipedia.org)