 Gaby Doriot s new popular song "La signora di tutti" will be a hit in France, so her manager is negotiating a new contract with her film production company... The movie studio is bustling, but Gaby is nowhere to be found. Her manager checks her hotel, finding her on the bathroom floor: an apparent suicide attempt. At the hospital, as the anaesthetic is applied, Gaby flashes back to her life back home in Milan... At school, Gaby s affair with a married teacher gets her expelled. She and her sister Anna are invited to a party by Roberto, the son of a well-to-do banker. He and Gaby plan to go to Rome together, but his father s unexpected return sends him off alone. Gaby is on very good terms with Roberto s invalid mother, but his father, Leonardo, is drawn to Gaby...