Pipì, Pupù and Rosemary decide to spend the night close by a pond, but the frogs keep them awake because they are practicing for a concert they're about to give. After an initial discussion in which Pipì almost drowns because he tries to catch the frogs, the three friends decide that staying there and fighting is useless and they accept the frogs' offer to listen to their concert. And thus, to the dulcet tones of the frogs' croaking, all three finally manage to fall asleep.