Xavier, a pharmacist, lives peacefully in bigamy with his two women, Carmen and Beatriz, but the harmony breaks down when they find he has another lover, Monique, a nightclub dancer.
In Rio de Janeiro, after an altercation with his father and mother, a young man named Bebeto kills his family and goes to a movie theater, where he watches four weird vignettes.
The story of three characters in a brothel room: the prostitute Neusa Sueli, the gigolo Vado and the homosexual Veludo speak of their lives and expose their marginality.
