[Machine Translation] For a special consultation related to a rare old book - a mysterious request, the two members of Biblia's antiquarian bookstore headed for Yukinoshita in Kamakura. Something surprising awaits them at the old house. A huge collection of books by Edogawa Rampo, a rare detective and mystery novelist. In exchange for giving it away, the owner asks them to open an elaborate safe left behind by a certain person. The mystery of the safe is intertwined with the strange lives of the people surrounding Rampo's works. And the labyrinthine mystery even attracts that person. The beautiful shopkeeper and her mother, the solution to the mystery becomes like a battle of wits between the two of them.