In the demolition ruins of Kowloon Walled City, the orphan Long Yu accidentally touched half of the ancestral compass, awakening the dormant "Dragon-Suppressing Vein" in his body. This was supposed to be a once-in-a-century auspicious event in the Feng Shui world, but it attracted the pursuit of Zheng's real estate. The black-hearted Feng Shui master behind it set up the "Five Ghosts and Dragon Devouring Bureau" to drain his dragon energy in order to cut off the earth's veins and build a business empire.
At a critical moment, Li Xuantong, the reclusive master of Qimen, appears to rescue him and reveals Long Yu's life experience: he is the successor of the "Hui Zong Lineage" that combines the essence of the four sects of Bazhai, Xuankong, Yang Gong, and Jinsuo Yuguan. He is responsible for repairing the damaged dragon veins in China. From then on, Long Yu held the incomplete compass in his hand, from deciphering the "Yin Evil Formation" forced to move by sound waves, to exposing the "Hanging Golden Toad Bureau" of the CBD building; from the genre game with "South Monk Bei Shen Dong Yang Xima" to fighting against the "Cyber Feng Shui" conspiracy to tamper with smart homes.
Every time the compass needle turns, it affects the secret battle between capital and metaphysics; every time the dragon energy awakens, it approaches the truth that the thousand-year-old dragon vein has been sealed. When the multinational group resorts to the ultimate killing move of "blood sacrifice to the dragon's lair", Long Yu will eventually use the secret techniques of the four sects as its blade and use its own dragon vein as a guide to continue to write the legend of "mysterious veins determine the world" in the urban jungle.