小泽圣子（板谷由夏 饰）和丈夫秀昭（佐野史郎 饰）结婚多年，膝下育有两个孩子清贵（佐藤诗音 饰）和美帆子，生活在平静之中亦充满了幸福。然而，某日灾难突然降临，清
Plot Summary:Typical mother Noguchi Satsuki spent her days trying to balance her life as a wife to her hard-working husband Kazuhiko and mother to their only son Tomoya, a seemingly withdrawn fifth-grader with whom Satsuki struggled to communicate. Seiko and Ozawa Hideaki, living in the same neighborhood as the Noguchi family, were raising a rebellious junior high school daughter Mihoko and their first son Kiyotaka a second-grader who was showered with much love and affection by his mother. On that ill-fated day when Kiyotaka was reported missing and was later found dead, Tomoya was taken into custody by police as the prime murder suspect. Tomoya slowly begins to open up about his innermost feelings as the hidden truth reveals the true motive behind his cruel act of violence. Satsuki, as mother of the perpetrator, comes face-to-face with her son's true self while Seiko, as mother of the victim, deals with her sorrow and anger.