On the surface, Samantha Grace is your average sixteen year old. Except for the fact that she is, or will become, the person who discovers how to actually move through time - Shifting through layers of time. An expansive saga that travels backward and forward through time and across the globe, Shift follows Samantha as she navigates adolescence, an overbearing mother, boys, girls, love, heartbreak, a war for the control of time itself that spans multiple timelines, and a homicidal zealot who believes the only way to save time is to rid it of Samantha Grace once and for all time.