In the century-old prosperity of the fictional dynasty "Dayin", the barbarians in the north are watching with eagerness. The three major sects in the rivers and lakes are involved in a bloody storm due to the competition for the "Nine Ques Heavenly Book" that can destroy the fate of the country. In the struggle for the succession of the nine sons of the critically ill emperor, the powerful minister Jingguo uses the "Tianji Pavilion" to weave prophecies to control the court situation. In the political strangulation in temples and rivers and lakes, there is an ultimate questioning of power, revenge and human nature.
Xiao Wuwu, a counselor from a poor family, assists the seventh prince to seize the throne for revenge, but discovers that he is actually the young master of Tianji Pavilion whose family was exterminated twenty years ago, and he also carries the fragments of the "Nine Towers Book of Heaven". When he used the prince's help to bring down his political opponents, he discovered that the seventh prince was the culprit who massacred the Xiao family. At the same time, Xie Jinghong, the owner of the "Zhu Yilou", the number one killer organization in the world - actually a barbarian princess in the north - approached Xiao Wuwang for the great cause of restoring the country, but she confronted him with swords at the bloody wedding banquet.
Xiao Wuwang, who fled the world, was hunted by both the court and the martial arts. He was forced to expose his martial arts skills in a martial arts competition, and used the scraps to set up a trap to trigger internal strife among the three sects. Xie Jinghong, who slaughtered the Forbidden Army to save him, asked, "Does it count as a hero to save a man and become a demon?" When the two were trapped in the Dragon Vein Underground Palace of the previous dynasty, they discovered a mural of Duke Jingguo who had regicide and usurped the throne twenty years ago, and also revealed the hidden curse of the Dayin royal bloodline.
