A charming rogue contrives to serve a short court sentence in an airy mental institution rather in a prison. This, he quickly learns, was a mistake. He clashes with the head nurse as he attempts to take charge over his fellow patients and enliven their institutional existence. Combining revolt with recreation, he stages a rollicking midnight party complete with liquor and chippies. For escalating offenses the head nurse has him submit to shock treatment. But when the party is too horrid for her, she forces him to submit to a final, irreversible correction.