Werner Dux heir of the big car company DuxWerke is a gambler who has just been arrested in Chicago for shooting a cardsharper While in jail he learns from his friend Michael Nissen that his father has died recently That means that the DuxWerke are without a leader at the moment for Werners cousin Steffie who is his coheiress is still too young to run the firm In this situation Werner convinces his friend Michael who is an engineer by profession to take over the firm as long as he is in jail and to pose as him Michael agrees and is able to bring the firm up again He even arranges a reliability test for motorcycles via Istanbul Rome and Barcelona which creates a big Turkish order for the company When the real Werner escapes from jail and arrives in Germany it looks as if the whole story is up to bust But Werner needs money so he convinces Michael to go on as before and hand over all profits of the firm to him
