Pipì, Pupù and Rosemarina are in stage costume to play Pipino, Pipigeno and Rospamina in Mozart's "The Magic Flute", and to reach the theater they must cross a forest so beautiful that it seems enchanted. Rospamina appears to be very talkative from the start, even very impertinent, and complains about the discomfort of her clothing. Suddenly, the forest comes alive with ferocious animals who, disturbed by our three little friends, begin to pursue them...