The day before his date with his Hina, Hina catches a cold and cancels. Hina goes to a nearby clinic, where the doctor gives her some suspicious medicine, calling it a diagnostic test, but it's actually an illegal aphrodisiac smuggled by a mad scientist-like doctor. Hinano's body becomes sensitive and Hina feels aroused when he "palpates" her. He threatens her with a suspected serious illness and makes her visit the doctor, but her once innocent self is corrupted by the many wicked drugs the doctor creates and goes crazy...