Zong Hong, the last "Heir of Heaven's Secret" in Xuanmen, has been burdened with the curse of "revealing Heaven's Secret will be punished by God" since his childhood. He lives in seclusion in the old alleys of the city, making a living by divination for others and resolving minor disasters, but he never dares to touch the real core of Heaven's Secret. By chance, in order to save a girl who was haunted by evil spirits, he was forced to use the lost "Purple Micro Pan", and unexpectedly got a glimpse of the shocking truth that "the dragon veins of Kyushu are about to be cut off, and the human world is about to be catastrophic."
From then on, Zong Hong was involved in a Xuanmen dispute that spanned a thousand years: the mysterious "Yin Cao Pavilion" was pressing hard for the secret treasure, the dormant "Qi Men Family" had their own hidden agendas, and even the world's rich and powerful families and special government agencies were involved. Relying on his ancestral "Secret Records of Heavenly Secrets" and his extraordinary deduction skills, he works step by step amidst the swords, swords, shadows and treacherous magic. While deciphering the ensuing fatal murderous intent, he is also looking for a way to break his own curse and save the world from the catastrophe.
On the way, he met the sassy policewoman Su Qing, the quirky Qimen girl Lin Xiaoman, and the secretive old Taoist priest Xuan Qingzi, and they formed a temporary alliance to fight against the dark forces. From thousand-year-old tombs in barren mountains to skyscrapers in prosperous cities; from ancient legends that have been passed down for thousands of years to little-known secrets of Xuanmen, Zong Hong uses calculation as a blade and fate as a chess to find his own path against heaven in the game between heaven and human hearts.