Divisional Inspector Bricot sends two detectives to the French Riviera to dismantle a drug deal in a carnival mask factory. However, knowing the low efficiency of his subordinates' work, he goes down to Nice to conduct the investigation.
| Directing | Jean Rollin | Director |
| Writing | Jean-Claude Benhamou | Writer |
| Production | Jean-Claude Benhamou | Delegated Producer |
| Sound | Jean-Claude Benhamou | Original Music Composer |
| Sound | Alex Perdigon | Original Music Composer |
| Camera | Quinto Albicocco | Director of Photography |
| Editing | Janette Kronegger | Editor |
| Production | Lionel Wallmann | Production Manager |
| Sound | Jean-Claude Reboul | Sound |