Rival brother and sister Gaëtan and Chantal, the last heirs of the late billionaire financier Omar Porassis, use every trick in the book to try and claim his fabulous inheritance when two of Omar's natural sons, Roger and Marc, are found. The brother and sister try to manipulate Marc and Roger into stealing their inheritance. After discovering the deception, the two half-brothers join forces to escape the many traps set by Gaëtan and Chantal, who try to eliminate them by any means necessary.
| Actor | Role |
|---|---|
 Roger PierreRoger | Roger |
 Jean-Marc ThibaultMarc | Marc |
 Jacqueline MaillanChantal | Chantal |
 Claude VégaThierry | Thierry |
 Léonce CorneGaétan de Montescourt | Gaétan de Montescourt |
 Gisèle SandréEvelyne | Evelyne |
| JJean FaivreNot listed | Not listed |
 Gib GrossacForeman who is looking for his bowl | Foreman who is looking for his bowl |
 Maxime FabertRoland | Roland |
 Jean-Pierre MoutierGuard in armor | Guard in armor |
 Jean OzenneNotary | Notary |
| NNono ZammitHead of the guards | Head of the guards |
| DDon ZieglerOmar Porassis | Omar Porassis |
| BBrigitte Barbier(uncredited) | (uncredited) |
 Robert Deslandes(uncredited) | (uncredited) |
 Max DesrauMurdered man (uncredited) | Murdered man (uncredited) |
| PPierre Durou(uncredited) | (uncredited) |
 Rodolfo Licari(uncredited) | (uncredited) |
 Pierre MiratMurdered man (uncredited) | Murdered man (uncredited) |
 André NumèsWorker (uncredited) | Worker (uncredited) |
| JJean SylvainVan cleaner (uncredited) | Van cleaner (uncredited) |
 Michel ThomassMurdered man (uncredited) | Murdered man (uncredited) |
| GGaston Woignez(uncredited) | (uncredited) |