In April, Kaji Kohei (Atsushi Ito) entered Kirigaoka Junior High School and became a temporary class teacher. He welcomed his teaching career with enthusiasm. On the first day of class, he faced a sharp question from a female student, Asuka (Mirai Shida): Can we change the world? Kaji has paid more attention to Asuka since then. Asuka went to the law firm to find lawyer Tamako Jimoku (Miho Kanno), but the other party told the secretary that she didn't know this student. Asuka began to skip school, and Kaji's care gradually opened her heart. However, one day Asuka jumped out of the classroom. Tamako Jimoku appeared as Asuka's representative lawyer and asked to sue Kirigaoka Junior High School. She believed that Asuka's jumping off the building was not accidental, but the inevitable result of being bullied at school. Kaji was shocked by this. In the process of accompanying Tamako to investigate, he found that Tamako was Asuka's former stepmother. However, the school strongly denied the bullying incident, and the principal claimed that in order to protect the reputation of students, the school would never let students suffer social discrimination. Kaji was moved by the principal's style and words. Although the teachers in this school have their own problems and the students have their own strange neuroses, he still resolutely left Tamako's company and stood on the side of the school. Tamako lost her love and her job in order to fight this lawsuit, but she firmly believed that justice would prevail over everything and give Asuka a fair explanation.