The couple had been wanting a child but hadn't been blessed with one. The other day, they went to the hospital for a check-up just to be sure... and Yumi, the daughter, was diagnosed with infertility. After much deliberation, the couple decided to ask their cohabiting mother, Hitomi, to carry a surrogate pregnancy. This decision marked the beginning of a taboo drama of incestuous insemination between a mother-in-law and her daughter's husband.
