Hinami, who lost her husband and lives a difficult life with her son, is asked by her husband's brother for a body instead of living assistance, and is also violated by his son Kosuke. A few years later, Hinami, who remarried and became chairman of PA, finds out that Kosuke is enrolled in the school where her son entered. Hinami moves to eliminate Kosuke, but on the contrary, she falls into the cunning trap of the Student Organization.