Yukiko Suo is a dedicated teacher who has been selected for an overseas training program in the United States to further her teaching career. Under her guidance, previously delinquent student Iida has gradually begun to change. However, as Yukiko continues her mentorship, Iida is forced into repentance, and as a reaction, develops intense, obsessive feelings toward her. One day, he suddenly attacks her. The rape attempt is interrupted when another student arrives—the grandson of the foundation president sponsoring the overseas program.