Des:His wife, Mio, is under pressure to give birth to her grandchild. One day, she and her family end up going on a hot spring trip that she won at a lottery in a shopping district. However, this trip was a child-making trip planned by her mother-in-law. On the day of her trip, her mother-in-law asks her husband to have sex with her, but he refuses. Meanwhile, her father-in-law also tries to hold his wife, but is refused. The two, overcome with sexual desire, headed to a hot spring to soothe their aching bodies. And her father-in-law happens to witness Mio taking a bath... Mio, a wife and child who lives in a small school. A certain heavenly man arrived at a free hot springs trip, and his family members came to a hot springs inn, and the mother-in-law designed it well and went on a solo trip...