Due to the poor sales of the developed food, the nearly 50-year-old Koichi Takahashi (Mizuni) was transferred to the branch in Iwate Prefecture in the northeast as the section chief, which is undoubtedly a demotion to him. But optimistic, he rented a 200-year-old house in the countryside, with his mother Chengdai (grass flute photon), wife Shizi (Akira Yashida), daughter Zimei (Ai Hashimoto) and son Zhiya (Hamada Ryuchen) lead a simple life of returning to the field. At first, life was not satisfactory. Shizi and Zimei were distressed because they could not integrate into the country circle, and Chengdai seemed to have symptoms of Alzheimer's disease again. In addition, strange events happen one after another at home. The Takahashi family gradually realized that in addition to them, the old house was also inhabited by a mythical monster of folklore-the seat of the boy. Their fate has changed as a result... This film is based on the author Hiroshi Ogihara's original work of the same name.