The film portrays Ninomiya playing Shūichi, a high school student finding a way to get rid of his stepfather who had returned home and begins to terrorize his family.
[1] Shūichi Kushimori (Kazunari Ninomiya) lives with this mother Yūko (Kumiko Akiyoshi) and younger stepsister Haruka (Anne Suzuki).
One day, his estranged stepfather Ryūji Sone (Kansai Yamamoto) suddenly returns home and begins to freeload off his family.
However, police officer Masashi Kano (Baijaku Nakamura), who also met Shūichi at the time of Sone's murder, finds flaws in his claims and actions.
The police manages to uncover the truth of what really happened to Sone and Ishioka, but Kano lets Shūichi go home on the basis that he promises to willingly turn himself in the next day.