Hana, who lives with her daughter and son-in-law, was feeling restless. This was because she had overheard the sounds of her daughter and son-in-law's intimate activities. While it was a good thing that the couple got along so well, it was torture for Hana, who slept alone. One night, waking up, Hana witnessed her daughter and son-in-law's activities and, unable to resist, masturbated by herself. Although she spent her days falling into self-loathing, one day, Hana witnessed her son-in-law jerking off in the living room and impulsively seduced him, leading to them having sex. A few days later, her daughter reported that she was pregnant. While this was joyful news, Hana began to think that she also wanted to get pregnant with her son-in-law's seed...