Visitor Q - Takashi Miike

A father, who is a failed former television reporter tries to mount a documentary about violence and sex among youths. He proceeds to have sex with his daughter who is now a prostitute and films his son being humiliated and hit by classmates. "Q", a perfect stranger somehow gets involved and enter the bizzare family who's son beats his mom, who in turn is also a prostitute and a heroin addict...