A secret club for sadistic members displays women who voluntarily seek extreme submissive treatment, recording their appearance and fetishes before selling each to the highest bidder. Shikawa Uni is presented as a genuine masochist who finds happiness in being used in every hole. Anal torment, slapping, choking, humiliation, and massive squirting drive her into roaring, white-eyed orgasms as the entire depraved appraisal and auction is revealed.