Maema Yanoe, a married woman who took a job at a delivery company for her husband's sake, suffers harassment from her neighbor and veteran driver, Ozawa. Enduring the abuse for her family's stability, she finds herself sexually frustrated due to a lack of intimacy at home. Sensing her vulnerability, Ozawa seduces her into having her first affair. Though her mind resists, her body succumbs to the rough, blue-collar pleasure he offers, gradually drawing her deeper into an escalating series of illicit encounters. The story captures Maema's inner conflict, emotional instability, and the growing tension between her conscience and desire.