After her husband is abruptly laid off, Mizuki converts a room in their home into a beauty salon to help support him. Business goes smoothly until a creepy neighbor arrives as a client, exposes his rock-hard cock, and pressures her into servicing him. Though reluctant at first, Mizuki finds herself increasingly captivated by his impressive size, so different from her husband's. The sex-crazed intruder plays with her slim-waisted G-cup body, gives her repeated creampies, and gradually brings the married esthetician under his control.