Watch 123Movies. Under the leadership of Genghis Khan, the Mongolian army marched west to destroy the Jin Dynasty, and afterwards wanted to go south to destroy the Song Dynasty. Masters from various martial arts schools in the Central Plains were fighting among them. The great chivalrous men represented by Guo Jing (Xiao Zhan) serves the country and the people, gathering the martial arts forces of the Central Plains to defend Xiangyang.