They cross the boundary between pain and pleasure. Trembling underwater while holding their breath, enduring the suction of a vacuum cleaner yet surrendering to pleasure. Electric drills stimulate their anuses, clothespins clamp their nipples, creating a sharp, exhilarating pain. Suspended by the neck, yet released by the vibrations of an electric toothbrush. Trapped in compression bags, experiencing new sensations through enemas. At the very moment pain reaches its limit, pleasure explodes to its fullest extent. These masochistic girls step into a perverted world of abnormal pleasure, seeking the most intense orgasms they've ever known.