In Marseille two gangs are fighting for the drug traffic.An American killer, Paolo Timetti called the Mude arrives at Marseille for a delivery to the band of Arnakos.But somebody denounces him to the police.The peaceful agent of customs Camposantos will in charge of arresting him.Suddenly there is a confusion the henchmen of Arnakos arrive at the airport and take away Camposantos believing that he is Paolo Timetti called "The Mude".