A clever fellow proves himself smarter than the gangsters who would exploit him. The trouble begins in Paris when the vacationing hero accidentally gets into an car accident with a smuggler. The crook is most apologetic for the mishap and kindly offers to let him drive his Cadillac to Bordeaux and continue with his holiday. The poor traveller doesn't know that the vehicle is a black market on wheels carrying everything from jewels to heroine. He is pursued by the smuggler and by a rival gang. He is so busy enjoying himself that he doesn't bother to look back at the gun battles raging behind him.