Young Bastards 4: Berlin Beer Bondage (2011)

On the mean streets of Berlin, young kids get kidnapped to be used and abused in dingy basements by a bunch of domineering macho guys with a wickedly perverse passion for raunchy fetish indulgence. Piss, bondage, beer, and whacking--they'll resort to any suitable method to humiliate their victims, who must indulge in their every sexual whim. But Mika manages to over power his abductor...and gets his revenge.