Little Jean-Claude was adopted by former singer Jacques Duffot and his wife Anne-Marie. The child's mother, Simone, is determined to take him back, happily advised by the director of a private agency. They persuade Anne-Marie that Jacques is the legitimate father. Distraught, the young woman leaves home. Jacques resumes his singing career, but Jean-Claude refuses to accept the separation and fries him to death. The couple reconcile at his bedside, while Simone tiptoes away.
| Actor | Role |
|---|---|
 Tino RossiJacques Duffot | Jacques Duffot |
 Blanchette BrunoyAnne-Marie Duffot | Anne-Marie Duffot |
 Charles DechampsM. de Vandière | M. de Vandière |
 Jacqueline PorelNot listed | Not listed |
 Raymond CordyJo Bractonne | Jo Bractonne |
| PPaul AzaïsLe père Bizule | Le père Bizule |
 Jean DunotLucien | Lucien |
 Louis de FunèsEddy Gorlier | Eddy Gorlier |
| RRenée CorciadeMme Prestat | Mme Prestat |