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...
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.
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.