The play tells the story of Afan, a man who values friendship, is generous and eccentric, and Tao Junran, a handsome, talented and martial privy envoy, who go through a series of turbulent life experiences in their happy daily lives of love and hatred in Biyun County, which is known as the "City That Never Sleeps". It is a sweet love story in ancient costumes, and they finally realize their wishes and support each other with their loved ones.