Two delinquent boys target Erika, the mother of a classmate, for her large breasts. While trying to find blackmail material by secretly filming her, they capture footage of Erika performing fellatio on their homeroom teacher. The two visit her home and use the stolen footage to blackmail Erika into having sex with them. Erika, initially reluctant, is manipulated into a threesome and ends up being penetrated by both boys. As they fondle her large breasts and torture her with an electric massager, she gradually starts to feel pleasure… She is surprised to find that the penis inserted into her while blindfolded belongs to her own son！！ Despite her shock, Erika accepts the pleasure. After being gang-raped by the two delinquents, the housewife with large breasts reaches orgasm！！
