On the Côte d'Azur, a rich man wins a large sum of money playing at the casino. As he leaves the establishment, he is assaulted and knocked unconscious, his loot stolen. A few days later, the young croupier who had given him his winnings is involved in a motorcycle accident while avoiding a car. The investigation brings the two men together, but the millionaire's wife falls in love with the handsome young croupier. The plot begins...
| Actor | Role |
|---|---|
 Helmut BergerKosta | Kosta |
 Françoise FabianLara | Lara |
 Paul MeurisseInspecteur Martino | Inspecteur Martino |
 Massimo GirottiOlmi | Olmi |
 Christian BarbierFred | Fred |
| FFlorence LafumaJudith | Judith |
 Nicole GobbiMartine | Martine |
 Denise BaillyNot listed | Not listed |
 Paul BiscigliaNot listed | Not listed |
 Ermanno CasanovaNot listed | Not listed |
 Guy MarlyNot listed | Not listed |
 Bernard MussonNot listed | Not listed |
 Maurice DucasseNot listed | Not listed |
| IIsabelle LebigotNot listed | Not listed |