Yumi, a teacher at a famous private school, is kidnapped and imprisoned by the underground sex organization NEOBLACK. She is forced to drink urine as part of her initiation and undergoes brutal anal training to become a flesh toilet. As time passes, Yumi awakens and reaches orgasm with triple penetration 3P. Recognized for her potential, Yumi will participate in a large-scale party attended by 50 NEOBLACK members, featuring excessive urination, golden showers, bukkake, and deep-throating.
