Hitomi, who was diagnosed with terminal stomach cancer during a health check-up and given a limited time to live, desperately wanted to fulfill her longing to get pregnant in the short time she had left. However, due to her husbands infertility (azoospermia), the couples chances of pregnancy were extremely low. They were undergoing infertility treatment, and it seemed impossible for her to find a way to conceive. Then one day, her father-in-law visited their house. While they were drinking together for the first time in a while, Hitomi began to put her plan into action. The father-in-law falls for her scheme, and they begin having a sexual relationship, mutually experiencing orgasms.