Rei Kamiki (24), an office lady working at a design firm in Tokyo, visits a clinic for a company health checkup. There she encounters a perverted doctor who turns every examination—from vision and auscultation to breast, gynecological, dental, physical, urine, and blood tests—into a series of lewd, harassing acts. The entire ordeal is secretly recorded on hidden cameras. Despite her frustration and attempts to endure in silence, her body betrays her with trembling orgasms.