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.