Raul and Saul work at the same office. Raul, outgoing and good-natured, comes from a broken marriage. Saul is shy, with a critical and bitter disposition, is recovering from a failed suicide attempt. In spite of their differences, they become quite good friends. But their colleagues begin to wonder whether there's something beyond friendship between them.
A bourgeois housewife's life is shaken by a series of anonymous letters that she periodically receives, increasingly obscene. At first, she believes the sender to be a complete stranger, then she begins to suspect her husband's friends. But she doesn't dare talk to her husband about the letters or their contents: she remains anxious, thinking about suicide, and always waiting for the postman.
