Yoshikazu and Haruka are a young couple in their fourth year of marriage, but strangely, they have not been blessed with children. One day, when Haruka has a checkup, it is discovered that she is infertile due to a congenital condition. Worried, the couple confided the truth to Saori, the mother of their daughter-in-law. A kind mother, her heart aches at the trial that has been placed on her beloved daughter's womb. However, the young couple said to Saori with an extremely straight face, "Mother-in-law, please, in place of your daughter-in-law, Haruka, could you please give birth to a baby...?"