Nobody believes Jonah, a mild-mannered mental patient with split personalities, that his doctor is working with his evil alter ego, Maldeus, to sacrifice women to a sex-crazed demon in the hospital basement. Determined to expose his doctor's evil plan, Jonah goes undercover as Maldeus. Assisted by a cute nudist mental patient named Aurora, Jonah is thrust into a diabolical plot that forces him to confront the very limits of his own identity. Will Jonah defeat his doctor in time to stop the rise of Satan?