Special soldier Li Yan traveled through the late Tang Dynasty and became the captured son of the Li family in Longxi. After awakening the "field command system", he changed his destiny under Fengxiang City, rescued Tang Zhaozong, and became famous in one battle. Stepping into Chang'an, he faced the desperate situation of eunuchs taking power and feudal towns being separatist. The emperor is weak and his beloved Princess Yongning is trapped in the palace. Li Yan used Longwudu as his foundation to forge a new army, create weapons, and establish a spy network. Above the court, he plotted intrigues and battled wits and courage with the treacherous Prime Minister Yang Fugong; inside the palace, he and Yongning watched and helped each other, and their love secretly grew. When Zhaozong disappeared and there was a power vacuum in Chang'an, he resolutely supported Princess Yongning to supervise the country and fought alone against the heavy hunting by the Shence Army, Jiedushi and the family members. This is not a heroic epic of one person, but a legend of a modern soul who uses iron blood and resourcefulness to ignite hope in the afterglow of the empire and reshape the mountains and rivers.
