With her husband away on a long-term overseas assignment, Kaori has no sex life and her ripe body is constantly hot. Unable to resist, she has an affair with her son's teacher. However, the act is secretly filmed by her son's mischievous classmates. They threaten her with the footage, raping her right next to her son and even cumming inside her, but she enjoys it and shakes her hips while climaxing over and over again. So the mischievous boys get carried away and break into the bathroom, spraying milk squirt guns on her big tits and big ass, forcing her to masturbate! Things escalate even further, as they bring their son into their group and gang-rape her, cumming repeatedly! "Don't tell dad! Ah, I'm cumming again!"