At 52, traveling salesman Wolfgang Zenker is in old school territory: he peddles the company's classic clothing line to boutiques that cater to women over 35. When Wolfi loses his drivers license in his brand-new Mercedes but can't afford to lose the season's sales because his frustrated wife desperately wants a new bathroom, their son's vacation plans take a back seat as Karsten is forced to making sales rounds with his father instead of celebrating his high school graduation in Spain. Also making the rounds in small town southern Germany is successful and attractive sales rival Steven Brookmüller, 33. As the men's paths cross, long-hidden secrets are revealed and things come to a hilarious head.

20 volunteers agree to take part in a seemingly well-paid experiment advertised by the university. It is supposed to be about aggressive behavior in an artificial prison situation. A journalist senses a story behind the ad and smuggles himself in among the test subjects. They are randomly divided into prisoners and guards. What seems like a game at the beginning soon turns into bloody seriousness.