Yuki Kimura, a company president's secretary, agrees to marry his son Yutaka on the president's recommendation. When Yutaka breaks up with his lover, a hostess, she implies she's going to commit suicide. In a panic to get to her quickly, Yutaka punches a man at a taxi stand. The next day, when Yutaka's lover hears the news about a man dying and realizes it was the man Yutaka punched, she demands money...

Sashichi is a dapper and handsome man. He is called a doll Sashichi because he is "a nice man like a doll." On top of that, he is a considerable young boss. This is a story in that Kanda solves the murder spree in Edo where a famous boss of Otamaga pond, Sashichi lives in.

After getting permission to dig up the pawnbroker's grave, Young lord samurai was surprised to find the body was missing, as was the Gosu plate. He had a suspect in mind, and was able to use him to learn of the pawnbroker's hideout and try to piece together the parts of the puzzle. A superb and exciting conclusion to a very clever mystery story set during the Golden Age of Japan. With no easy questions and his life hanging in the balance, can Young lord solve the mystery and regain the valuable plate?