Half a year after Enomoto Kei‘s disappearance, Serizawa Go and Aoto Junko have been going about their regular law practice. At this point, Serizawa‘s client Fujibayashi, the chairman of a securities company, is bludgeoned to death. Furthermore, it is Serizawa and Fujibayashi‘s niece Ikuko who discover the dead body. Asked about his relationship with Fujibayashi by the detective Kouno, Serizawa discloses that he was arranging the donation of Fujibayashi‘s late wife‘s collection of paintings worth an estimated 1 billion yen to an art museum.