A brave and talkative wine merchant, Eugène Barbentin drives his son Pierrot out of the family home, because he has given birth to his girlfriend. His wife then reveals to him that he is not Pierrot's father and she flees with her lover. Abandoned, Eugene will be saved by his mother who will restore the situation with energy and determination.
Maurice loves Juliet and Michael loves Lily. Romance blossoms on the hill. They are workers, artisans, and Lily has a real talent as a singer. But Claude's arrival brings trouble to their relationships. Maurice, jealous, approaches Lily. Singing in the streets, Lily quickly becomes a cabaret star.