It tells the fantasy adventure of Shen Yan, the last patrol officer of the Ruins Town Department. Half of an ancient ghost elephant is sealed in his body. This special constitution allows him to use the illusion-breaking mirror to restrain the ghost elephant, but he is always at risk of his sanity being eroded.
Frequent cases of strange disappearances occur in Luoxia Town in the west. The victims have turned into "elephant slaves" who have lost their minds and are addicted to eating raw meat. The mastermind behind the scenes is a ghost elephant who feeds on the obsessions of living beings. Shen Yan was ordered to investigate, and while handling the case, he met Wei Yuan, the commander of the Ruins Suppression Department. The other party not only knew the secrets in his body, but also guided him to face the century-old ghost body that feeds on the souls of the entire town.
As the investigation deepens, Shen Yan gets acquainted with Su Qing, a girl from the Fox tribe who seeks revenge for her tribe being wiped out by ghost elephants, and meets Xuanli, a judge who is fleeing from the underworld occupied by ghost elephants. They gradually discovered that the ghost image originated from the residual resentment of the ancient Three Realms War. Mysteries such as the "disaster of all phenomena" that led to the destruction of the Zhenxu Division ten years ago, the origin of the ghost image in Shen Yan's body, and Wei Yuan's true purpose were all closely related to the loose seal of the ghost image and the conspiracy behind it. A battle about the survival of the Three Realms, obsession and redemption slowly kicked off in the exploration of Shen Yan and others.
