A sequel to "The Hero of Tang Dynasty: Autumn Water In The Desert"; In 867 AD (Tang. Xiantong era), a major event occurs in Xichuan, Jiedu which leads to the assassination of Chen Lei to be assassinated. The murderer is suspected to be "the world's number one swordsman" Pei Yu. With the capital shook, Luo Chonglou and Jin Shengnan go to Xichuan to investigate secretly, and discover a terrifying conspiracy to overthrow the Tang Dynasty.

The assassination of Tianjizi, a taoist teacher traveling to Beijing reveals a huge conspiracy to usurp the Tang emperor and seize power by the two major forces of the current state minister and the Jianghu organization "Sky Net Sect". How will heroes such as Jin Shengnan and Luo Chonglou turn the tide and punish the evil?