On her half-sister Victoria's wedding day, 25-year-old nurse Lily Watson is forced into a deadly bargain. Victoria is set to marry Dominic Castellano, a ruthless mafia king rumored to have killed his last wife. But when Victoria flees, Dominic's hitmen threaten Lily's family. To protect them, Lily takes Victoria's place at the altar and becomes the bride of a man she fears may be a killer.