It is said that in the Southern Song Dynasty, there was a famous and generous man in Daming Prefecture, Hebei Province. He was Lu Junyi (played by Ma Jingtao), also known as the Jade Unicorn. He was a heroic and smart man who valued righteousness over profit. He also had many contacts with the Liangshan hero Leopard Head Lin Chong. Lu Junyi was a martial arts expert, and his prodigal son Yan Qing was also a loyal hero. Unfortunately, Lu's wife and the housekeeper were secretly in collusion and plotting something bad. As a famous and wealthy man, Lu Junyi became a thorn in the eyes of the court officials and also an object that the Liangshan heroes were eager to win over. The government hated the Jade Unicorn and set up an unjust case to lure him into a trap. Li Gu and Jia Shi added insult to injury to frame Lu Junyi in order to get along with him. At the same time, Shi Qian, the flea on the drum, went down the mountain and maneuvered cleverly. With the loyal Yan Qing sacrificing his life to save his master, the fate of Lu Junyi, who occupies an important position on Mount Liangmarg, has reached a critical moment... This film is adapted from a story in "Water Margin", one of the four great classics.