During a weekend in a country house, young people eager for strong emotions end up switching partners and experimenting drugs.

Paulo has a strange relationship with his cousin Sônia, whom he loves since childhood. But she despises him and, being in love with another woman, causes a lot of humiliating situations to him.

Writer Sílvio Proença needs to travel to São Paulo in order to promote his new book. At the airport, he meets a group of old mates. With the boarding canceled due to a strong storm, the group goes to the apartment of Marialva, daughter of one of Proença's friends. Seduced by Marialva's music and charms, Proença spends the night there, where he wakes up the next day, completely naked. Still groggy from his hangover, he goes to pick up the bread left outside the apartment; that's when the wind closes the door and leaves him naked outside.

A documentary on Boca do Lixo, a dowtown São Paulo square that became a tentpole for film distribution on the early 20th century, becoming, from the 1960s on, a production district for popular eroctic films and for avant-garde directors.