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.