Two rival gangs fight over drug trafficking. An American killer named Timetti Le Muet arrives at Marseille airport to make a delivery to Arnakos' gang. He is denounced to the police, and the peaceful customs officer Camposantos is put in charge of his arrest. Following a mix-up, Camposantos is mistaken for the killer himself. Taken in by Arnakos' men, the innocent customs officer is forced to play a rather unexpected role.
| Actor | Role |
|---|---|
 Darry CowlCampo Santos | Campo Santos |
| TTainia BérylGloria | Gloria |
 Francis BlancheArnakos | Arnakos |
| JJoëlle LatourNot listed | Not listed |
 Pierre BrasseurRussian killer | Russian killer |
 Serge MarquandArnakos' lawyer | Arnakos' lawyer |
 Max Montavon'La Globule' | 'La Globule' |
| JJean-Lou ReynoldsPepito | Pepito |
| NNic VogelChief Inspector | Chief Inspector |
 Marcel DalioGregor | Gregor |
 MoustacheInspector | Inspector |
 Jacques HillingPolice Officer Joly | Police Officer Joly |
 Joe WarfieldPaolo Tinotti | Paolo Tinotti |
 Michel ThomassAdhémar | Adhémar |
| JJean ToscanNot listed | Not listed |
| JJacques BertrandPolice Inspector at the Bar | Police Inspector at the Bar |
 Christian MarinDésiré Piccolo | Désiré Piccolo |
 André BadinSmall Police Inspector | Small Police Inspector |
 Pierre DuncanButcher | Butcher |
 Christian LudeNot listed | Not listed |
 Ham Chau LuongFo Kaï | Fo Kaï |
| JJean-Loup ReynoldPepito | Pepito |
 Jean PanisseFisherman (uncredited) | Fisherman (uncredited) |
| RRaoul Saint-YvesBarman (uncredited) | Barman (uncredited) |