Zhang Feifan, an orphan from a water town in the south of the Yangtze River, grew up in the rainy Sanqingguan with a half-hearted Taoist. His hands were shaking even when he was trying to draw talisman on a chicken, but he suddenly encountered the strange incident of a dead fish floating in a lock in Longtan, and a mad dog biting its tail. Before he died, the master stuffed him with half a piece of burnt black mahogany talisman and warned in a trembling voice: "That thing... Is out!" The oil lamp went out suddenly, and the cold air was biting. Zhang Feifan, whose life experience is a mystery, is forced to step into the Xuanmen whirlpool filled with talismans and monsters, and the collision of Chinese and foreign secrets. Ahead is the unpredictable crisis of the three realms, and the key to everything is hidden in the mystery of his birth...