Masao Yano was once a high ranking member of the biggest yakuza group in Japan. He left the yakuza and now runs a private detective office with a young girl Shiori Kuroki. She is in the second grade of elementary school. One day, he gets a phone call for his assistance. He goes out to meet his client, but he finds his client dead.

Ce synopsis est en anglais : nous ne l'avons pas encore traduit.