Dou Yanshan, a descendant of the rebels who were exterminated, returned to Chang'an after five years of hard work and hardships, hoping to seek revenge against Yun Ye, the Marquis of Lantian. Dou Yanshan carefully laid out and used the Hellflower to control the people of Chang'an City, comprehensively defeating Ye's confidence,Yun Ye used his outstanding mind and advanced thinking to create top-notch weapons, leading Princess Anlan, Di Renjie, and Xiao Wu to defeat Dou Yanshan in the great war and save the entire Li Tang Dynasty.