Learning The Ropes. 2009 AVN Award Nominee for Best All-Sex ReleaseDeep within the seedy side of town, where the subculture of. the depraved and the perverted hide in the shadows, a beautiful young girl has awakened to find herself in. the middle of a twisted sexual nightmare. Sin City presents the story of an infamous underground sex. institution, where young women are taken to learn the art of decadent erotic pleasures. An institution where. morals an...