Yan Qing is the third highness of the Nanhua Kingdom. Due to the promotion of his eldest brother, Nanhua and Xuanwu have good relations and jointly plan the North-South military meeting to enhance the relationship between the two countries.
When he first arrived at Yan'an, the capital of Emperor Xuanwu, Yan Qing had a troubled relationship with Di Yao. Afterwards, he was brought back to the palace and met Emperor Xuanji, and they have known each other for thousands of years.
Unexpectedly, on the same day, another murderous corpse appeared on the outskirts of Yan'an City. It was quite bizarre. Emperor Xuan, as the commander of the Forbidden Demon Division, went to investigate the case. Yan Qing accompanied him and helped to uncover the mystery of where the murderous corpse came from...
The next day, another serial murder case occurred in the city. After preliminary investigation, it was suspected that it was caused by ghosts. So the two of them agreed and immersed themselves in the case again. Until the truth of this case gradually emerged, it actually involved the truth that happened many years ago...
The truth about the rebellion of the king, the origin of the thousand-year-old monster, the truth about Chunliu's destruction of the country, the husband that the little tree spirit is looking for, the truth about the missing people in the city, the secret of the ghost sword, the truth about the snake turning into a dragon in a short time, the devil's conspiracy, the gate between the human world and the netherworld, the foreign enemy's plan for more than ten years, the king who commands all ghosts...
