Elena (Graciela Borges) is happily married to Augusto (Mário José Paz), a musician her same age, with whom she had no children. One morning Elena receives an anonymous call: Augusto is in the hospital. At the sanatorium, Elena discovers that the person bringing Augusto is Adela (Valeria Bertuccelli), a thirty-year-old girl, who turns out to be her lover. Elena not only has to withstand such a revelation. On the verge of death, her husband asks him to take care of the young woman. Helen goes through the mourning with fury and pain. A few days after her death, Adela appears at her house, attempting an approach that Elena initially rejects.