A great detective brilliantly unravels the mysteries of a case. But what becomes of those left behind in the aftermath? Young man Sasauchi Kazuo moves to Oosaka to live with his grandaunt upon entering university. His new home is an old Western-style mansion, where he meets the owner, Yamada Chidzuko—a woman who smokes while dressed in a kimono. She once made a name for herself as a girl detective and even served as the model for a novel, but those days are long gone. She constantly gets Kazuo's name wrong—calling him Yoshio or Katsuo—and makes all sorts of off-base remarks. Kazuo's initial disappointment, however, is short-lived; it seems that people harboring secrets from the past still come to visit Chidzuko…