Berlin has a secret. In the middle of the city lurks a hidden, dirty prison where men are mercilessly humiliated. No one knows who the victims are. But horny guys keep disappearing and only reappear after weeks: distraught and completely over-fucked. What happens behind these dark walls? Why do the sadistic guards keep their slaves in warm piss? Why does the horny black guy lie in the gynaecological chair for days free for the pleasure of the guards? What about the dirty padded cell? And do the large-caliber guards survive the outbreak of their favorite delinquent?