the numata family, who lives in a high-end community, has an enviable life. the father ichimoto (played by tomori ono) serves as the head of the personnel department of a large company; the mother kayoko (played by suzuki honami) is gentle and considerate in handling everything in the family; the eldest son shinichi (played by kamiki takanosuke) has excellent academic performance and is versatile in sports; only the youngest son shinichi (played by urakami seki), who is in junior high school, locks himself in his home due to bullying and refuses to log in ccc。 worried about his son's future, kayoko invited 100% of the students claimed to be tutoring to yoshimoto wilderness (played by sho sakurai), a tutor who was admitted to tokyo university. yoshimoto's perverse and abnormal behavior made the numata couple full of anxiety, but the huge liquidated damages forced them to let them go. the arrival of this teacher seemed to throw a stone into the seemingly calm numata family, which not only caused endless ripples, but also exposed the dark and fragile side of each family member's heart... the film is adapted from the original work of the same name by honma yohei, and the late director yoshimitsu morita once brought it to the big screen.