This sex comedy concerns the efforts of Julien to get his timid, "backward" 20-year-old son to take an interest in sex and get married. After a series of adventures with women (arranged by papa), Valentin finally gets married to a woman who appears to be as shy as he is. Things get complicated when his father begins an affair with her.
| Actor | Role |
|---|---|
 Paul MeurisseJulien Blaise | Julien Blaise |
 Gila von WeitershausenGisèle Bertrand | Gisèle Bertrand |
 Bernard MénezValentin | Valentin |
 Michel RobinMonsieur Bertand | Monsieur Bertand |
 Walter BuschhoffHoteldirektor | Hoteldirektor |
| MMaría Luisa PonteMadame Bertrand | Madame Bertrand |
| FFrance LambiotteGabrielle | Gabrielle |
 Mari Carmen PrendesGermaine Blaise | Germaine Blaise |
| HHervé LasseronThug | Thug |
 Didier SauvegrainThug | Thug |
 David GabisonThug | Thug |
 Antonio FerrandisHairdresser | Hairdresser |
| JJimmy KaroubiOld man | Old man |
 Jean-Pierre ZolaMr. Lafleur | Mr. Lafleur |
 Jean JuillardBusinessman | Businessman |
 Maurice VallierBusinessman | Businessman |
 Maurice TravailBusinessman | Businessman |
 Nicole NordenLucie | Lucie |
 Katia TchenkoOdile | Odile |
| MMonita DerrieuxLulu | Lulu |
| JJacqueline DaneGinette | Ginette |
 Dominique DavrayThe hairdresser's wife | The hairdresser's wife |
| JJean-Claude MagretPatrick | Patrick |
| MMarie LanglereSwitchboard operator | Switchboard operator |
| JJerry BrouerChauffeur | Chauffeur |