A Serbian film 2010

Milos, a retired, financially hard-pressed adult film star, is running out of options. Then, cryptic director Vukmir enters the picture and lures Milos out of retirement: the unsuspecting actor is the ideal protagonist for Vukmir's avant-garde art-porn film. And tempted by an offer he can't refuse, Milos signs a lucrative contract and agrees to follow Vukmir's taboo-breaking instructions. However, the devil is in the details. As Milos belatedly realises that the evil auteur is gradually transforming him into a passive vessel of perversion and an unstoppable machine of sexual violence, there is no turning back. Now, the diabolical producer can mix pleasure with pain and sex with torture, opening the gates of madness. Indeed, this is hell on earth. Is there a limit to Vukmir's wickedness?