Two teenage boys become intensely aroused by Reiko's huge breasts and ass. Though they recognize her as the mother of one of their classmates, they decide to get closer by waiting outside her house and secretly filming her with a hidden camera. Their homeroom teacher later visits Reiko’s home and is caught on camera passionately embracing her while receiving oral sex. The boys record the entire incident and later use the video to blackmail Reiko, forcing their way into her home. Holding the incriminating footage, they plot to sexually exploit her. They press vibrators and electric massagers against her groin, delighting in her reactions, while forcing her—blindfolded—to perform oral sex on her own son in an utterly surreal and degrading act. Despite her shock, Reiko’s body begins to respond, and she gradually succumbs to the perverse situation. As the impossible scenario unfolds, how will Reiko’s mind and body transform under the pressure?