Six months ago, Megumi lost her husband and began living with her daughter and son-in-law, forming a household of three. Recently, her daughter has been busy with work, leaving Megumi spending more evenings alone with her son-in-law. One day, when her daughter was in a bad mood, Megumi and her son-in-law ended up drinking together. The son-in-law became heavily intoxicated, stumbling as he walked. Worried, Megumi helped him to bed. That night, mistaking her for his wife, he embraced her, kissed her, and eventually had sex with her. Though Megumi initially resisted, the sensation of a man's body—something she hadn't felt in so long—began to stir forbidden emotions within her, shaking her resolve.