The story is set in a modern bustling city, where medical resources are abundant but competition is fierce. The male protagonist Li Xin and the female protagonist An Ran work in the same top-grade hospital. Life and death are staged every day in the hospital. Medical staff work under high intensity and protect every life with professionalism and love. In such an environment, Li Xin and An Ran went through many challenges from acquaintance to mutual understanding, and wrote a touching love story.