Weston is the half-demon child of the Morningstar, a doppelganger of the evil one himself. Weston learns to control his demons and enters the priesthood, becoming a prized exorcist of the Vatican. His quest for redemption is a race against time, as he looks for a way to avoid the fate planned for him by his dark father, hoping he can find a way to save his human side from the demons that attend him.