Restaurateur Sartet is investigated over being behind a great many robberies.
When a special task force known as Brigade antigangs under the helm of chief inspector Le Goff catches him red-handed, he has just secretly provided his sister with access to his booty.
Sartet's sister invests the booty in hiring henchmen who are supposed to free Sartet. They eventually kidnap Le Goff's brother who happens to be a famous footballer. The chief inspector is informed his brother is about to die unless the police releases Sartet.