Employing only amateur actors, Klaus Lemke′s shot his vibrant, now legendary outsider tale on a shoestring budget. The main protagonist is 15-year old Mark, whose ordinary existence as a supermarket clerk is shattered following the violent death of his older brother Ulli, a street criminal. By chance, he becomes acquainted with Gerd, the aging leader of a biker gang, who takes him under his wings. Together with Gerd′s gang, Mark cruises through Hamburg, becomes involved in shady dealings and conflicts, but also experiences the aggressive rejection of the rocker scene by bourgeois society. Finally, Mark and Gerd get their chance to take revenge on Ulli′s murderers.