De zigeuner Hugo is ontsnapt uit de gevangenis en pleegt nu met twee handlangers bankovervallen. De politie zit hen op de hielen, maar het trio weet hen steeds een stap voor te blijven. Een juwelendief, Yan Kuq, is eveneens op de vlucht en duikt onder in een hotel, waar Hugo en zijn vrienden zich eveneens bevinden. De politie bestormt het hotel, maar Hugo weet te ontsnappen. Later ontmoeten Hugo en Yan elkaar opnieuw, maar de politie jaagt nog steeds verbeten op de twee mannen.
| Directing | José Giovanni | Director |
| Writing | José Giovanni | Novel |
| Writing | José Giovanni | Screenplay |
| Writing | Franco Verucci | Screenplay |
| Production | Alain Delon | Producer |
| Sound | Claude Bolling | Original Music Composer |
| Camera | Jean-Jacques Tarbès | Director of Photography |
| Editing | Jacqueline Thiédot | Editor |
| Art | Willy Holt | Production Design |
| Directing | Philippe Baronnet-Fruges | Assistant Director |
| Directing | Luigi Biamonte | Assistant Director |
| Directing | Valérie Moncorgé | Assistant Director |
| Directing | Bernard Quatrehomme | Assistant Director |
| Sound | Jean Labussière | Sound |
| Costume & Make-Up | Hélène Mourry | Costume Designer |
| Costume & Make-Up | Mimi Gayo | Costume Designer |
| Production | Ralph Baum | Executive Producer |
| Sound | Django Reinhardt | Music |
| Production | Ludmilla Goulian | Production Director |
| Camera | Jean-Claude Bourgoin | Camera Operator |
| Directing | Lucile Costa | Script Supervisor |
| Sound | Jean Nény | Sound Mixer |
| Costume & Make-Up | Fernande Hugi | Makeup Artist |
| Costume & Make-Up | Françoise Andrejka | Makeup Artist |
| Costume & Make-Up | Pierre Vadé | Hairstylist |
| Costume & Make-Up | J. P. Wirtz | Hairstylist |
| Sound | Noëlle Balenci | Sound Editor |
| Crew | Jo Jo Iaconelli | Special Effects |
| Art | Louis Boussaroque | Assistant Decorator |
| Art | Gérard Viard | Assistant Decorator |
| Production | Raymond Danon | Delegated Producer |
