Mariko Hibiki, a slender married woman, finds her life disrupted when construction workers arrive to renovate her home. Initially annoyed by the rude behavior of the worker Abe, she accidentally catches sight of his impressive cock and can't help but stare. Noticing her gaze, Abe subtly exposes himself, slowly drawing Mariko in. With her relationship with her husband growing distant and her body craving attention, Mariko feigns resistance but ultimately gives in, reaching out to grasp his thick, hard shaft. Succumbing to unexpected temptation, she gradually loses herself to desire as their affair takes a new, intense turn.