Following the devastating loss of his wife in a battle against the forces of evil, Gabriel is convinced to rejoin his previous band of demon hunters, journeying from relative anonymity in America to the deep unknown parts of Europe. He is accompanied by his estranged best buddy Michael, who conceals a dark secret, the mystical Hannah, whose visions foretell the future, and a motley crew of demon slayers. Gabriel must confront his painful history and determine who is truly a friend or foe after losing a member of his team.