Takahashi Meiko (Mano Azusa) used to work at a large newspaper company. However, she is now an ordinary housewife. She receives a call from Sasame (Kanda Masaki), a former colleague who is now working at another company asking her for her help. She is informed that a murder has taken place when she arrives and goes to the scene of the crime. She learns that the victim was her son’s intermediate school teacher.
Haneda, the president of a company dealing in gold, is shot to death on the Raicho 9 limited express from Osaka to Kanazawa. Detective Kamei begins an investigation in cooperation with the Fukui Prefectural Police. In the Green Car, Detective Nishimoto had noticed a beautiful woman talking to the victim just before he was killed. Looking into her background, she turns out to be Yumiko Miura, living in Setagaya in Tokyo. An eyewitness who claims that she is the murderer also appears, and she is taken into custody. Before long, the victim's unexpected relationships will be revealed one after another...
This gripping docudrama is a fictionalized account of what could happen to a Japanese family when one of their sons shames them in front of the entire nation.