Due to declining company performance, Yumi's husband is transferred to a regional subsidiary. Several months pass, and her son Taro begins to grow increasingly withdrawn. Worried, Yumi wonders, "Is Taro at that age where he really needs his father around?" But the situation takes a far darker turn. Unbeknownst to Yumi, Taro has been suffering relentless bullying from his classmates. As his torment continues, his bullies grow bolder—eventually coming to Yumi's home. They violently assault her, subjecting her to repeated gang rape. Yet the tragedy doesn't end there—further horrors await.