Saya Uchi visits an esthetic salon where she is served a metabolism-boosting tea containing an unexpected effect. At first, the treatment feels normal, but gradually her body grows increasingly sensitive. The oil applied all over her skin contains a hidden aphrodisiac, and the massage intensifies, moving from surface stimulation to deep internal arousal. As her consciousness blurs, she is restrained, unable to resist as wave after wave of pleasure overwhelms her. Once her sensuality fully blossoms, Saya's desires escalate uncontrollably—she develops an urge to take the cock into her mouth and anus. Ultimately, she undergoes a shocking transformation by accepting creampie ejaculation inside her.