Campana, a commissar at the drugs bureau of Paris police gets an undercover job in Nice to catch an Italian-French mafia boss. As he slips into the identity of a gangster's brother, who was already killed, he has to play the role of a loving husband with child - something that is not so easy for a confirmed single like Campana. Unfortunately American killers chase behind the Nice mafia clan too, in order to get control of French drug trades to USA.
| Sound | Eddie Vartan | Original Music Composer |
| Camera | Maurice Fellous | Director of Photography |
| Writing | Francis Veber | Screenplay |
| Writing | Georges Lautner | Screenplay |
| Directing | Georges Lautner | Director |
| Editing | Michelle David | Editor |
| Production | Alain Poiré | Producer |
| Art | Damien Lanfranchi | Production Design |
| Costume & Make-Up | Fernande Hugi | Makeup Artist |
| Directing | Claude Vital | First Assistant Director |
| Sound | Louis Hochet | Sound |
| Directing | Annie Maurel | Script Supervisor |
| Writing | Richard Caron | Novel |