Yoshikazu and Haruka. A young couple in their fourth year of marriage, but strangely not blessed with children. One day, when Haruka was examined, it was discovered that she had infertility due to a congenital factor. The two worried confided the fact to their daughter-in-law's mother, Saori. A kind mother who is given to her beloved daughter's womb and hurts her heart in the trial. However, the young couple said to Saori with a transcendental face. "Oh, my mother-in-law, my wife ... Instead of Haruka, can you give birth to a baby ...?"