The beautiful and kind teacher Hisae is very popular with the students. However, behind the scenes, she is relentlessly sexually harassed by Mr. Sakamoto, the son of the school's chairman. Today, Hisae is sexually harassed by Sakamoto again. However, the act is witnessed by a student, Kuroiwa. Using his previous actions as an excuse, Kuroiwa molests Hisae on the train home. Hisae is unable to resist. But the nightmare doesn't end there. The next day, when Hisae goes to the classroom, she sees...