Born into a well-off family, Franz Blum had led a carefree youth until, some time after graduating from high school, he was arrested by the police. For, involved by a gang of bad boys, the young man had taken part in a bank robbery. A "heroic deed" which earned him six years in prison. Once behind bars, he was treated with ruthless inhumanity by the guards. And little by little - but inexorably - Franz turned into an insurgent...

One night when seeking his estranged wife, Hoffmann goes to the youth center where she works. The police are there rounding up radicals who frequent the center - Hoffmann runs into the building and ends up being shot in the head. He awakens with brain trauma, partially paralyzed and unable to speak. The police accuse him of stabbing an officer; the radicals herald him as an innocent victim of police brutality. During his slow recovery at the hospital, Hoffmann must piece together his life and struggle to remember the events of that night.