Robert Manuel

In Les Halles, in the heart of Paris, the restaurateur André Chatelin (Jean Gabin), leads an uneventful life until the arrival from Marseille of Catherine (Danièle Delorme), the daughter of his ex-wife Gabrielle (Lucienne Bogaert). She tells him her mother is dead and that she is without resources. Chatelin welcomes her under his roof - then marries her. Gérard (Gérard Blain), a young student that Chatelin looks upon as a son, becomes Catherine's lover, and she sets him at odds with Chatelin. She asks him to kill the restaurateur. He refuses. She kills him. Having discovered that Gabrielle is still alive, declined and drug addicted, Chatelin realises the darkness of Catherine's soul who has always lied to him.

Out of prison after a five-year stretch, jewel thief Tony turns down a quick job his friend Jo offers him, until he discovers that his old girlfriend Mado has become the lover of local gangster Pierre Grutter during Tony's absence. Expanding a minor smash-and-grab into a full-scale jewel heist, Tony and his crew appear to get away clean, but their actions after the job is completed threaten the lives of everyone involved.

Vallois, a vice inspector for the Paris police, takes special interest in the plight of drug-addicted Lucky (Najda Tiller), whom he considers to be more victim than criminal. Taking it upon himself to wean Lucky away from narcotics, Vallois also wins her love -- and, incidentally, smashes the dope ring responsible for her addiction