Married woman Nanase was living a happy married life, but driven by her mother-in-law's wish to see grandchildren and her own desire to start a family, she was preparing to take a new step forward. However, a man—her husband's boss—exploited his position, threatening her husband's job and exploiting her distress to forcefully thrust his cock into her body, subjecting her to unwanted pleasure. The shock and terror gradually shook Nanase's resolve, weakening her resistance over time. Through this sudden turn of events, her life took a drastic and irreversible turn.