A body found in the mountains of Tohoku, where Muroi has moved, is linked to the Rainbow Bridge incident. Muroi is asked to return to work, and he ponders whether he can keep his promise to his former colleagues. As the investigation progresses, each of the children Muroi has taken in grows up.

Set in Langkawi, Malaysia, professional scammers Dako (Masami Nagasawa), Boku-chan (Masahiro Higashide), and Richard (Fumiyo Kohinata) target the Fuu Family for their next heist. Raymond Fuu, who was the head of the Fuu Family, passed away and he left behind 10 trillion yen. Dako, Boku-chan and Richard scheme to gain the inordinate inheritance. --asianwiki