650 AD. Second year of Emperor Gaozong's reign. Several corpses were found in the ninth-floor demon building in Liangzhou Prefecture of Western Regions. A mysterious force constantly dominates this terrifying forbidden place.

During the Republican era Pan Shizue, young lady from rich family,, is haunted by a demon and has no choice but to invite Taoist master to perform a practice to drive away the fox demon and cheat the fox demon by matching a paper man with a fake marriage. After the marriage with Pan Shizue her fake groom Zhang Shaofeng commits adultery and is caught in a hurry, he hides in a magic house and accidentally unseals monster

Professor Xu and Liu Tong are ordered to protect the tomb. While spying on the grave robber Lu Daocheng, they accidentally befriend Su Yuehong, Lu's daughter-in-law. At the same time, they discover traces of Japanese tomb robbers. Faced with the two forces, Liu Tong and Professor Xu struggle to protect the tomb with the help of Su Yuehong.

Judge Dee investigates a conspiracy involving a dangerous elixir and supernatural chaos, ultimately exposing a rebel general who used the elixir as a pretext for plotting a military coup against the Empress Wu Zetian.