A mysterious letter addressed to Wu Lao Gou, Wu Xie's deceased grandfather, disrupted the retirement plan of the Golden Trio, i.e., Wu Xie, Zhang Qi Ling, and Wang Pang Zi. The letter referred to a mysterious underground palace called "Comet" in Mongolia. The Golden Trio decided to explore it, only to get involved in an unimaginable adventure and encounter treacherous Mongolian bandits, the countdown to escape from the "Comet", the weird rules of the burial chamber, and the invisible entity... The Golden Trio had no choice but to take a leap of faith...

The film tells the story of the snake demon Liqing who charms all living beings. In order to monopolize Wang Sheng, who fell in love at first sight, she enters Wang Sheng's house by any means, and designs to "swap skins" with Wang Sheng's wife Xu Pan. But Liqing did not expect that her actions repeatedly disobeyed her mother-in-law, who collects men's souls, and her selfishness completely angered her, causing Wang Sheng to be in danger again and again. , Can the love between the two continue?

During the chaotic period towards the end of the Tang Dynasty, the Prince of Liang usurped power and secretly eliminated the heir to the throne. Tian Anye, a humble charcoal seller, unintentionally gets entangled in this conspiracy. In a series of intense battles where allies and enemies become blurred, the secrets hidden within Tian Anye and the truth behind the sacrifice of the people in Liang City are unveiled. In the end, Tian Anye fights against the imperial soldiers, saving a mother and child and escaping from the city of Chang'an.