Heimspiel.

High school teacher Andreas Vossen (39) is an avid soccer fan who goes to his team's games every Saturday. At least that's what everyone thinks. In reality, however, he spends his weekends enjoying fights with hooligans. His double life is jeopardized by the appearance of a new pupil. Benny (18) is a hooligan by conviction. A confrontation begins that drives the teacher more and more into a corner.