A famous prestigious high school N● School, a former art teacher Yuki (55 years old), who is fed up with the cold relationship with her busy husband at work and continues an affair with a young man. Each time they meet, the young man's humiliating actions escalate. Despite her confusion over the humiliating commands in the wild, Yuki's masochistic nature opens up rapidly. She is raped by young men and unknown men in the wild, while bathing in urine, she revels in it... There is no trace of the once beautiful teacher there, she has become nothing more than a livestock-like meat toilet...