"...'Brandon' (Fassbender) is a 30-something yuppie living in New York who is unable to manage his sex 'urges'. After his wayward younger sister 'Sissy' (Mulligan) moves into his apartment, Brandon’s world suddenly spirals out of control.."
The film's 'explicit' sexual scenes resulted in the film being rated NC-17 in the US. Fox Searchlight Pictures ("The Black Swan") still intends to release the film, uncut, in a limited US theatrical release, December 2, 2011.
"I think NC-17 is a badge of honor, not a scarlet letter," said Fox Searchlight president Steve Gilula. "We believe it is time for the rating to become usable in a serious manner".