This is a troubled time, an era of cannibalism. The flames of the Huangchao Uprising burned across the mountains and rivers of the Tang Dynasty. The Tubo, Dangxiang, Khitan and other foreign tribes took the opportunity to invade. Chang'an was captured six times, the emperor fled nine times, the people were displaced, warlords separated themselves, and the world was in chaos. In such troubled times, Li Chengyuan was reborn. He is a member of the Tang clan, a bloodline of Emperor Taizong, and shoulders the mission of reviving the country. How will he fight his way through this troubled world and rebuild the Tang Dynasty?