The story revolves around an unusual family led by rich widow Mrs. Hondo, who stays at a luxurious hotel where Suguro stays in Wagayama Prefecture. She would act like a tyrant around her children who were afraid of her and were at her beck and call, or we could say under her control. Unfortunately, a tragedy strikes the Hondo Family while on a hike. Mrs. Hond,o who was supposed to be taking a rest on the way to the shrine, is dead. Kawahara Daisaku, the chief of the local police station, asks Suguro to help with the investigation of Mrso’sHondo’soinvestigationstigatione.