An adult female investigator infiltrating an evil organization is captured, molested, and tortured into orgasm. Bound from head to toe and unable to move, Natsuki Takeuchi is humiliated on a triangular wooden horse. Crotch-rope training has her shamelessly grinding her hips and convulsing through repeated orgasms. Pantyhose pulled over her face distort her beauty, while pain and pleasure destroy her proud resistance and send her into an endless orgasm nightmare.