During the Great Depression, an Oklahoma farm boy and a charismatic minister learn that they are key players in a proxy war being fought between Heaven and Hell.

In an attempt to avenge her daughter’s death, Irene Kelly travels through parallel universes, killing her daughter’s murderer again and again. As she becomes consumed by vengeance, her humanity begins to slip away—until the cycle is disrupted when she rescues Mia, a sharp-witted teenager already marked by the killer.