At the gym, a man slips an aphrodisiac into a woman's drink and watches as she sweats and becomes breathless during her workout. Under the drug's effects, Hina Nanami grows extremely sensitive, twitching with every touch. Forcibly brought to climax repeatedly inside the gym, she loses all ability to resist, squirting copious amounts of fluid each time. Eventually, she's taken bareback right there in the gym, her will completely shattered as she's made to orgasm over and over by the cock, her mind breaking down in intense, realistic detail.