Synopsis: New Yorker Brandon (Michael Fassbender) manages to create an aura of being an average, normal guy, while underneath, he's a seething pit of sexual compulsion. He is addicted to pornography and casual sex. The release it provides means he can avoid real relationships with women. In fact, the only woman he shares a relationship with is his sister Sissy (Carey Mulligan).

Although Brandon successfully pre¬tends to be average in public, Sissy has long stopped trying. She's needy and impulsive and when she arrives unannounced at Brandon's apartment on the verge of self-destruction, it becomes clear that Brandon needs to take a long, hard look at his life.