The world-champion in boxing Dany Wagner saves Sandra right before some criminals could give her a shot of heroin to get her addicted. After that he stops a bank robbery with his friend Andreas. They plan to fight the underworld of Nuernberg together.
Fearing the anger of his boss Erik, the mad shorty Rene tries to keep a low profile at a campground near Lake Constance where he has to deal with small-town bureaucracy and bizarre campground residents.