Popular porn star Minami Hatsukawa goes undercover at a blowjob bar, masturbation club, swingers’ bar, and sensual massage studio. She tests her professional skills on real amateur customers, only for seasoned patrons to pull out their cocks and try to make her cum first. The investigation turns into full-blown sex as Minami repeatedly climaxes on amateur cock, forgets about reporting, and finally suggests they do it bareback.