After losing her husband and being alone, Miki's daughter worried about her and decided to live together with her and her husband. Although the three of them have gotten used to living together and get along well, Miki feels awkward when her daughter and son-in-law are affectionate in front of her. When Miki quietly leaves, the couple starts having sex. Miki watches and gets aroused, comforting herself. One day, when her daughter goes shopping and Miki is alone with her son-in-law, Miki wants stimulation and does housework without underwear to get excited. However, thrill alone isn't enough to satisfy her…
