In the shadow of the prosperous age of Kaiyuan, Zuo Shen Shu, a young man who was destined to be the "Lone Star of Heavenly Evil", and Li Qi, the downtrodden emperor's grandson who had the power of "photographic memory" but was imprisoned, were forced to team up to solve a series of strange cases. Gradually uncover the mystery of the "Baize Picture" that runs through three dynasties and involves royal secrets, ancient mythical beasts and strange magic. Under the splendid skin of Chang'an in the prosperous age, the dark core of power, human nature and faith is revealed.
