Luna is an endearingly prudish teacher in Milan, who lives with her grumpy father. Often teased by students and co-workers alike, her only ally is the janitor, Angelo, who harbors a secret crush on Luna. When a carnival comes to town, Luna meets a man who possesses a magic lamp, which he uses to free her "shadow self." This doppelganger is Luna's polar opposite, whose presence poses both a problem and an opportunity for Luna.