The film depicts the respective stories of a perpetrator's family and a victim's family involved in a juvenile crime. Satsuki (Izumi Inamori), an ordinary housewife, is having a hard time with her fifth-grade son Tomoya (Kazunari Kazusei), who is rebellious and won't talk to her. One day, an elementary school student is murdered. The police investigation reveals that Tomoya was the murderer, and Satsuki is stunned.