Tsumugi is a high school girl living an ordinary life. After school, she attends cram classes and dedicates herself to her studies. But one day, a minor incident shatters her daily routine. Driven by twisted desires, men turn her into a sex slave and begin a pleasure indoctrination. As a result, she is led into an orgasmic hell, caught between extreme pain and pleasure. One cruel scenario after another unfolds, culminating in an ending beyond imagination.