451 Forte.

Zé Alberto and Laura are lovers, and have a clandestine and permanently threatened relationship. Zé Alberto is married to Fernanda, Laura's sister, whose husband is in prison for murder. Fernanda is aware of Laura's relationship with her husband and constantly threatens them to tell Armando everything. Laura and Armando have a daughter - Sónia - whose greatest defect is greediness and the highest quality to cover up her mother's romance with her uncle. The fear of the two lovers increases and events precipitate when they receive the news that Armando is about to go on parole ...