In the late Tang Dynasty, evil spirits were rampant in the afterglow of the prosperous age. A series of strange cases occurred in Chang'an City. Skilled craftsmen died suddenly and mysteriously, and their masterpieces cried and whined in the middle of the night. This was known as the "Puppet Crying Soul Case". Lu Mingyuan, a former East Palace official who was demoted to the "Miscellaneous Affairs Department" of Leng Yamen due to the palace scandal case, was wronged and had a hidden illness. He had to join hands with a veteran who believed in "physical salvation" and an Orchid from the Western Regions who was proficient in poisonous poison to go deep into the darkest corners of this prosperous imperial city. From weird secrets to the turbulent palace struggles, they followed a clue of the strange fragrance from the Western Regions and gradually uncovered a shocking conspiracy that could shake the foundation of the empire. The truth is often more terrifying than monsters.