In a cul-de-sac in the Faubourg-Saint-Antoine, Leon shares two rooms with his sister Marie. In one, he receives his clients: he is a tailor. In the other, Marie receives her own: she is a clairvoyant. Leon was happy until he learned what Marie was hiding from him. She is actually a prostitute, and Maxime, her supposed fiancé, is her pimp. On the same day, Leon also discovers love in the form of Arlette, a provincial young woman picked up by Marie.
| Actor | Role |
|---|---|
 Bernadette LafontMarie Annassian | Marie Annassian |
 Claude MelkiLéon | Léon |
 Jean-Pierre MarielleMaxime | Maxime |
 Chantal GoyaArlette | Arlette |
 Christian de TillièreThe client sent by Albert | The client sent by Albert |
 Gérard BoucaronNot listed | Not listed |
 Vasilis DiamantopoulosPorphyre Aristophanopoulos | Porphyre Aristophanopoulos |
 Jacques Doniol-ValcrozeThe 1st customer | The 1st customer |
 François DyrekRigouille | Rigouille |
 Rémo Forlani'Gros Momo' | 'Gros Momo' |
 Henri GuybetLeon's friend | Leon's friend |
| AAnne JenniferNot listed | Not listed |
 Luc MoulletNot listed | Not listed |
 Denise PéronMrs. Pompoudin | Mrs. Pompoudin |
 Jacques RobiollesPhilippe | Philippe |
 RufusCharles | Charles |
 Dominique ZardiNot listed | Not listed |
 Marcel DalioMr. Paul | Mr. Paul |