Cipriano Duval is an Italian who has emigrated to Paris, where he works in a pediatric clinic as a nurse.

Grace Peterson works in department stores "Tutto per Tutti", along with many other young people. His employment contract entitling them to live in a boarding house built specifically for them by the company but on the other hand, forbid them not fall in love or marry under threat of dismissal. Still, Grace falls for Phil Golder, a violinist penniless. The director of the residence will notice and the best friend of the girl impersonate violinist girlfriend to try to save Grace dismissal.

A famous tenor has a car accident and asks the owner of a pharmacy for hospitality. The pharmacist’s wife is fascinated by the singer and follows him to Rome. Hovewer, she is sent back home.