Fu Jiahang, a private detective who can "see" the last shadow of the deceased, has a pair of ghostly eyes that make him the nemesis of evil, but he is also burdened with an unknown loneliness. He is funny, has extraordinary skills, and is very popular with women, but he only believes in himself and is as afraid of heights as a rat.
A series of bizarre murder cases followed one after another:
In Luanjiazhuang, a deep-seated compound, the third concubine Taixiang passed away. Behind the murder was a cold plan by the brothers to frame her and frame her for the crime.
In the deserted villages and mountains, the "fire unicorn" howling in the rainy night was raging, revealing the heinous sins of kindness being abducted and human nature being deceived.
In the stormy town, Su Wei, the sanctimonious mayor, turned out to be a human with a beast's heart, weaving a dark web that swallowed up countless women.
In the lively Yunzhongyan Restaurant, the benevolent owner died suddenly. Under the disguise of a "good guy", there was a ferocious face of greed and betrayal.
In the prosperous Jixiang Temple, the compassionate elder Jingxuan is actually a devil in cassock, using his faith to do beastly things.
Fu Jiahang is not alone. Fang Jiajun, the detective brother who hates evil, relies on him for life and death; Su Qing, a lively and tenacious confidante, never abandons her; Luan Zhijie, the orphan of Luanjiazhuang who is an expert in marksmanship, follows him loyally; Yu Qing, the "fire unicorn" who has a miserable life experience but has regained a new life, also helps. They jointly formed the "Netherworld Detective Agency" to pursue the truth in the fog.
However, the path to justice is fraught with thorns. Trust was betrayed (Fang Jiajun's death), loved one was destroyed (Su Qing was disfigured), and the abyss of human nature impacted Fu Jiahang's faith again and again. With every case, he grows.
