Introduced by a friend, "Niko-chan" arrives at the Beauty Center without really knowing what to expect. After receiving a simple explanation from a friendly male staff member, she is given a beauty drink to finish. A standard massage begins while she is still clothed, but for some reason, she finds herself reacting just by being touched. As the treatment progresses, she feels more and more aroused, even wishing for them to touch her more erotic spots. As if seeing through her, they strip her of her clothes and lingerie, leaving her naked. By then, her clit and cock are already throbbing! After being relentlessly tortured, the staff member's cock is finally inserted into her pussy. Niko-chan collapses in exhaustion. But the real action starts here! She finds herself bound in a mysterious room, and a relentless pleasure training begins! Her body is coated in oil, and she is tortured with every kind of toy, including a wand massager, anal pearls, and vibrators, culminating in an electric drill being driven into her pussy! Coming over and over, Niko-chan wonders if she's actually become more beautiful than before she started!?