Heitaro and Gonpachi come up with the idea of ​​testing their courage to see who has the guts. The two talk about Hyaku Monogatari, which is feared to cause a "monster" if they do this. After losing the lottery, Heitaro climbs Mt. Hikuma alone in the middle of the night during a thunderstorm. And, he boldly scratches the "trick stone" that should never be touched...! Before long, this triggers a series of strange phenomena caused by yokai in Heitaro's house! . A terrifying and exhilarating endurance battle between humans and youkai. Which one will win...!? (auto-traslated from Amazon.jp)