Ines is convinced that every wife is bound to be betrayed one day, so she is not surprised to find a note in her husband''s briefcase with a heart smeared in lipstick crossed by the words ''All Yours''. She follows him to a park on a rainy winter evening and witnesses a violent quarrel he has with another woman. The woman collapses; Ernesto sinks her body in a nearby lake. When Ernesto becomes a suspect, Ines provides him with an alibi. After all, hatred can bring people together as urgently as love. But Ernesto cannot bring his sexual adventures to an end...