Hinami, who lost her husband and lives a hard life with her son, is asked by her husband's brother to give her body in exchange for financial support, and is then raped by his son, Kosuke. A few years later, Hinami remarries and becomes the president of the P●A, but finds out that Kosuke is also enrolled in the same school as her son. Hinami tries to get rid of Kosuke, but ends up falling into a cunning trap set by the student council...