A business trip becomes a nightmare when Ao must share a hot-spring inn room with the boss she despises. He drugs her, secretly records her, and uses the footage to blackmail and assault her. With the air conditioner broken, the sweaty older man pounds her until morning, staying hard through load after load while taunting her about enjoying it more than sex with her boyfriend. His relentless thrusts finally make her slender body arch through repeated forced orgasms.