The protagonist, Lu Xuan, is an unknown Confucian cultivator in the Dafeng Dynasty. In a fantasy world where "everything is low-grade, only high-level cultivation", his fighting ability is mediocre, but he possesses extraordinary logical reasoning ability and a profound understanding of all kinds of fantasy knowledge (formations, elixirs, talismans, curses). The story begins with a bizarre "painted skin" case that happened in the capital, and even the "Xuanjing Division", which is responsible for arresting monks, was helpless. The face of the deceased was stripped off, his soul disappeared mysteriously, and there was no trace of spiritual power at the scene. Everyone thought it was the work of a high-level demon, but Lu Xuan was the only one to use logical reasoning to deduce from the ignored details that this was an exquisite murderous plot that used visual formations, low-level corpse refining techniques and rare herbs, rather than crushing him with brute force.
As a result, he became so famous that he was recruited into the Xuanjing Division under unusual circumstances, and partnered with Shadow Weaver, a female puppet master who possesses special skills but behaves mysteriously. The two team up to solve a series of unsolved cases that seem to be the work of "gods and demons": assassinations by "ghosts" in secret rooms, deaths by "flying swords" thousands of miles away, secret treasures from the treasury that disappear under heavy guard... Behind each case is the ultimate use of human hearts and fantasy power. As the case deepens, Lu Xuan discovers that all the clues point to a huge conspiracy to overthrow the dynasty and resurrect the ancient evil god. The highlight of the main plot is that the protagonist never relies on golden fingers or absolute force, but uses a rigorous "logical chain" to solve "supernatural" crimes. Every case solved is a wonderful battle of wits. In the end, with the wisdom of mortals, he can stand up to the gods and use the order of "Confucianism and Taoism" to fight against the chaos of "gods and demons".
