Adelaide Coelho da Cunha, daughter of the founder of the newspaper "Diário de Notícias", married to Alfredo da Cunha, then director of this newspaper, and mother of José, who is 20.  This educated, cultured woman, falls in love with the chauffeur, who is youger than her and from a different social background. This passion leads to confronting the established order of things and the standards of social behaviour of a wife and mother. She may at the same time be heroine and victim of her own courage in deciding to make a final break from the whole family status and run off with the chauffeur.  When his wife runs off with the chauffeur, Alfredo da Cunha with the aid of some of the eminent doctors of the day, has her declared irresponsible and incapable of administering her assets, and on this pretext he has her inprisoned in a mental hospital.