A model is found dead in the bathtub of her own mansion. A policeman tries to investigate, inquiring the rich and powerful men who knew her.

Luiz Antônio, a sociologist, had his political rights suppressed, during the Brazilian military dictatorship. Also, his wife Ruth had been tortured and killed. So he decides to hide in his niece Natércia and her husband Felipe's country house for a while. But she invites the intellectual Marcela and broker Ricardo for a weekend together. Luiz's world is upset and the existential problems of all get entangled, with unexpected results.

Two sisters love to have fun, but they are always scolded by their older sister.