 After the funeral of her father Arnaldo (José Lewgoy), who committed suicide, Engraçadinha (Lucélia Santos) confesses to the priest the motives. On the engagement party of her cousin Sílvio (Luiz Fernando Guimarães) with Letícia (Nina de Pádua), Engraçadinha seduces him in the library, and later she ends her engagement with Zózimo (Daniel Dantas) and lies to Letícia, telling that she is pregnant. Letícia decides to tell Arnaldo what happened, and he says that the child can not be born. He exposes dirty secrets to Engraçadinha, and a tragedy is announced.