A hundred years after the collapse of the prosperous Tang Dynasty, the Central Plains Dynasty and the Turkic Khanate launched a final tug of war outside Yanmen Pass. Dingyuan General Xiao Chengyan has been guarding the border for ten years, frightening the enemy invaders in the name of the "Iron-Blooded Great Wall", but because of a secret letter crafted by Turks, he was involved in a deadly game between the court and the feudal town.
In order to clear up the grievances of her family's "collaboration with the enemy", Ashina Yun, the ninth princess of the Turks, sneaked into the Tang camp disguised as a married princess, but met Xiao Chengyan on a narrow road in the bloody smoke. When the wolf flags at the border intertwined with the war drums of the Central Plains, the two went from fighting each other with swords to relying on each other in life and death, but they didn't know that the secrets they carried had already been carved into their fate -
He is the eldest son of the Turkic Khan living abroad, and she is the sword of revenge for the orphan of a famous general in the Central Plains.
On the battlefield of Yanmen, the bloody setting sun dyed not only the battle armor red, but also the love and hatred between two people across races: "I am willing to hire a hundred thousand cavalry, but the enemy is thousands of miles away; do you dare to use mountains and rivers as chess and fight for life and death with me?"
