Yang Guo (played by Chen Xiao) is the son of Yang Kang. He was taken in by Guo Jing (played by Zheng Guolin) and Huang Rong (played by Yang Mingna) by chance. However, although Yang Guo has a high talent for martial arts, he is stubborn and makes trouble everywhere. Guo Jing and his wife have no choice but to send him to Quanzhen Sect, hoping that the master can teach him well. Unable to endure the harsh and strict rules and miserable days, Yang Guo decided to escape, but accidentally broke into the forbidden ancient tomb, where he met Xiaolongnu (played by Chen Yanxi), who seemed like a fairy. In this way, Yang Guo became Xiaolongnu's apprentice and practiced the ancient tomb martial arts. As time went by, Yang Guo and Xiaolongnu gradually developed a relationship that went beyond the master and apprentice. Li Mochou (played by Zhang Xinyu) broke into Yang Guo and Xiaolongnu and was involved in the endless disputes in the rivers and lakes. What they have to face is not only the bloody struggles, but also the long separation of 16 years.