Serina visits an esthetic salon on a weekly basis. When this beauty-conscious woman steps into the clinic for the first time, she bursts into laughter at the unexpected service. Suddenly, tickling begins during her treatment. Three estheticians launch a synchronized tickling assault, causing Serina to writhe uncontrollably as her laughter never ceases. Even as she pleads, "Huh? Haha, it tickles!!" and "Stop it, please!!", the staff ignore her protests and continue the session with visible enjoyment. Further restrained while topless, she undergoes an oil-based tickling massage. Though initially agonizing, Serina gradually succumbs to the sensation, becoming overwhelmed by its pleasure and hopelessly addicted.