Natsumi, a teacher who believes in a strict teaching policy, gains a lot of trust, but on the other hand, she is antagonized by unserious students, Takashima and his friends. One day, Natsumi was molested on the train and was humiliated because she couldn't resist because of her fear. Moreover, she is witnessed by Takashima because of the whole story. Takashima invites her friends to threaten her Natsumi, do her best to disgrace her, and hits her with her anger. A few days later, Takashima and her friends, who still can't calm down, surround Natsumi on the train...
