The protagonist, Lin Fan, has been gifted with medical skills that are different from ordinary people since birth, with extraordinary powers of observation and intuition about diseases. He witnessed the powerlessness of his loved ones suffering from illness since he was a child, and determined to become a top pediatrician. Along the way, with his outstanding ability and unyielding will, he overcame numerous difficulties, made mentors and friends, gained true love, and eventually became an internationally renowned authority on pediatrics, treating countless children and writing his own legend.