1944. Léon Duchemin owns a restaurant with his sister. His clients are Germans, Résistance et black marketeers. Léon unwillingly joins the Résistance when a British pilot is shot down and hides in his attic and, through a series of mishaps, he accidentally steals the plans for Hitler's V1 missiles.

• Les Productions Georges de Beauregard
• SNC
• Bourvil
• Sophie Desmarets
• Peter McEnery
• Sara Franchetti
• Jean Poiret
• Reinhard Kolldehoff
• Pino Caruso
• Terry-Thomas