The story takes place in Chang'an City during the prosperous Tang Dynasty. Bai Letian (played by Huang Xuan) was an important official in the court, but he was demoted to a common man in order to collect materials for writing poems. Bizarre deaths occurred one after another in the city of Chang'an, and even the current Holy Emperor could not escape his fate and died in mysterious circumstances. All of this was related to an elusive demon cat...