Henri, the Man from Nantes, comes back to his country after a successful stay in the United States, where he was working for Liski, the drug dealer. With the fame of being a tough guy preceding him, he sets himself to the task of knowing why the French operations were not so profitable - and soon he is master of all links of the organization. He can now get it honed to perfection - or destroy it. Only... the Police are following his every step.

Jean Gabinas Henri Ferré dit 'Le Nantais'
Magali Noëlas Lisette, la caissière du "Troquet"
Lino Venturaas Roger le Catalan
Albert Rémyas Bibi, le complice de Roger
Paul Frankeuras le commissaire Fernand
Pierre-Louisas l'inspecteur Leroux - de la brigade mondaine
Marcel Dalioas Paul Liski, le chef du réseau de drogue
Jacqueline Porelas Solange Birot
Roland Armontelas Louis Birot, l'ingénieur-chimiste
Michel Jourdanas Marcel