During the Jinglong period of the Tang Dynasty, under the glitz and glamor of the prosperous age, there were ghosts and shadows. A blood-stained prophecy in the "Record of Transformation into Ghosts" turned out, indicating that seven "inhuman" conspiracies that could overthrow the dynasty would be staged one after another.
Su Yanchen, a genius who was demoted as a young minister of Dali Temple, was forced to form a partnership with Ash Nalan, a barbarian widower whose life experience was a mystery. One of them is good at judging people's minds and ghosts, and the other can understand the mysteries of yin and yang. From the deep palace of Chang'an to the border towns, from the high gates of aristocratic families to the secret realms of Jianghu, nightmares pray for rain, painted skins change souls, Fang Xiang steals treasures, and ancient temples live corpses... Strange things that go beyond common sense drag them into a huge conspiracy sweeping the world.
And Su Yanchen gradually discovered that his old injustice case that led to the downfall of his family was inextricably linked to the source of "The Record of Transformation into Ghosts". What they are tracking down is not only the real murderer, but also a life-and-death chess game against the fate of the Tang Dynasty. When the final "bloody dance" is performed in front of the Tai Chi Palace, who is the human and who is the ghost?