The plot follows family-man Milo trying to retire from the porn industry, only to be promised a vast sum of money to appear in a high concept "art" film, directed by a seemingly eccentric former child-psychologist named Vukmir who will not provide Milo with a script, only an earpiece through which Vukmir will direct him as he is filmed.
Entering the film with misgivings, it only gets worse for Milo, as it soon becomes apparent that he is involved in a very questionable film. After a particularly unsettling series of violent pornographic shoots, Milo tries to quit, only to be kidnapped, drugged and forced back into the production. He wakes up three days after the kidnapping, with only a video camera and some tapes in his possession. Milo watches the tapes to regain his memory, and discovers the horrors that he has witnessed.
Because of its extreme graphic violence and disturbing content, we're not providing trope examples. Be warned if you intend looking for A Serbian Film outside of TV Tropes.