Arisa, an I-cup busty married woman suffering from a sexless marriage and emotional dissatisfaction, feels a sudden thrill upon reading a magazine feature about a mysterious beauty salon. The terms "female genital development" and "A-spot stimulation" stir unfamiliar desires deep within her. Unable to resist, she visits the salon. As her body undergoes intense "development" treatments, she rediscovers the long-forgotten pleasures of being a woman, awakening to new, overwhelming sensations.