Pegasus Bookstore is going through hard times due to competition from internet bookstores. Kitamura Aki and Nishioka Riko are employees at Pegasus Bookstore. Aki is 23 years old. She has a strong will and freewheeling personality. She places her job and dreams above marriage. Riko is a 40-year-old single woman. She is the vice-manager at the bookstore. She has pride in her work. The two women have completely different personalities.
A young genius surgeon named Mikoto Saijou was born with a serious heart disease. While he was a little boy he got surgery of the leading Japanese heart surgeon Mamoru Shindo and his life was miraculously saved. Mikoto was inspired by the magnificent skill of Dr. Shindo and later he became a world leading pediatric surgeon. With his miracle skill and technique, he challenges difficult surgery and makes them to succeed one after another. Save the lives of children will make the future, Mikoto believes.