The hero of the animated film is Pepolino, a singer who becomes a sailor to search for his lost grandfather and his immeasurably valuable treasure. During the adventurous voyage across the seven seas, his greatest enemy is the witch Hildegard, who sets the pirate trio Red Beard, Peg Leg and Glass Eye on him. The money-hungry Captain Babaluk also gives him a hard time. But he finds loyal and brave friends in Jakob the dog, Poch the parrot, Emil the ship's rat and Babette the cat. And when he meets the mermaid Mora, he also finds true love.

In a big city Edith K., called "Madame", runs her fashion salon. She plans to spend the coming weekend with a friend and her models in her villa in the countryside to indulge in lesbian tastes while having good meals.

When a scuffle breaks out between the members of a criminal youth gang, one of them is stabbed to death. Since the knife belongs to the gang member Rocky, the judge assumes that he must have stabbed him too and sentences him to six years in prison. When he is released, he immediately sets off in search of the real culprit.