A new teacher named Momo, who was appointed due to the sudden resignation of the previous teacher, was determined to overcome the notorious class with her natural brightness and passion. One day, Momo suspected that a student named Kashiwagi was being bullied by a group of delinquents led by Yoshino, the chairman's son. However, Yoshino quickly became aware of this and was angered. From that day on, her daily life changed dramatically. She began to be subjected to days of humiliation and abuse by the delinquents.