On the Rue Bleue in a working-class Jewish neighborhood in Paris, people know each other and each other's business, and live and let live. That includes the streetwalkers who are a source of fascination to young Momo, who studies them from the window of his flat before preparing supper for his father. Momo's mother is dead, an older brother has left the scene, and his father is distant and cold with the young teenager. But his life is not lonely; there is Monsieur Ibrahim, who runs the shop across the street. And there is Sylvie, who provides Momo with his sexual initiation after the lad breaks open his piggy bank.