A writer named Emilio meets in a theater foyer of a sudden and mysterious girl, Giulia, and the two begin dating. He, who lives with his sister Amalia, bound to her with some morbidity, courting and she rejects him several times, but later she accepts him and finally disappears, leaving him in need. Emilio tries to help but he realizes that he can not help it. Giulia has a disordered life and he tries to change her life, he even beat her, but she can not change and his sister Amalia becomes isolated for the continued absence of his brother, and he is victim of a love who has been betrayed: when Amalia commits suicide, Emilio decides to leave Giulia.