Boulevard focuses on Georges 'Jojo' Castagnier, an adolescent who lives in a poor room under the roof of a block of apartments in the Pigalle section of Paris. He ran away from home when he realized that his step-mother hated him from day-one. Among Jojo's many neighbors is the gorgeous Jenny Dorr , a nightclub dancer, whose lover he dreams of being. But, to Jojo's disappointment, Jenny becomes the lover of Dicky, a former boxer, who spends his time loafing about the Pigalle cafés. Jojo lacks for steady work, but manages to meet his financial obligations with a series of odd jobs. He tries selling magazines, which is a success for a while, though posing as Narcissus for two gay artists proves to be something of a disaster. Eventually, he woos Marietta, one of his other neighbors and a girl more suited to his age. But when things go really awry, Jojo becomes desperate and tries to commit suicide by jumping off the roof of his building
as Georges Castagnier, dit "Jojo"
as Mariette Benazzi
as Dicky, l'ancien boxeur
as Jenny Dorr, l'artiste chorégraphie
as Monsieur Arthur
as Giuseppe Amato, un peintre
as le clochard qui ramasse les pièces
as la vieille Joséphine
as une danseuse
as le forain, animateur de boxe