Modern archaeologist Lin Xuan accidentally activated a mysterious bone fragment and traveled to the ancient battlefield where the Yellow Emperor and Chi You fought. In a mountain of corpses and a sea of blood, he rescued the Shennong witch Jiang He and met Ying Long, the powerful general of the Xuanyuan tribe. With the ability to deduce the "Book of Heaven" derived from bone fragments, he transformed from a "walker" who passively records the battlefield to a "variable" involved in the mythical war. The three of them work together to survive, and are involved in tribal conflicts and the shadow of the demon god's resurgence: they go deep into the Shoushan mine to witness the birth of the Xuanyuan Sword embryo, bravely venture into Chendu but are caught in the whirlpool of Xuannv's rebellion, awaken the Shennong Cauldron in the underground palace to purify the ancient banyan tree, and finally escape from the fallen Chendu with the key purification crystal.
From then on, Lin Xuan and his party embarked on the road of wandering. They contacted the remaining tribes, sent envoys to Dongyi, integrated the tribes to establish the "Anti-Lebanon Covenant", and witnessed the collision of artifacts and the participation of immortals and demons in the decisive battle of Zhuolu. In the end, the "Fire of Civilization" that gathered the faith of the human race defeated the body of the demon god Chi You, at a heavy cost. After the war, Lin Xuan became an eternal bystander and secret participant: witnessing Zhuan Xu's "Jedi Tiantong" dividing the boundaries between humans and gods, recording the undercurrent of Yao and Shun's abdication and Dayu's control of floods (actually leaking the seal of the Demonic Abyss), and experiencing the transfer of "mandate of destiny" in the changes of Xia and Shang.
As the dynasty rises and falls, he reveals the truth about the world: this world is actually the "Chinese Civilization Prototype Experimental Field" set up by future humans to calibrate history, the demon is the accidental pollution, the immortal cultivator is the built-in program, and Lin Xuan is the "civilization anchor" that maintains the experiment. After the establishment of the Shang Dynasty, the "Contract between Heaven and Man" was re-established, and the records in Lin Xuan's "Book of Heaven" were completed and returned to modern times. The decipherment of the bone fragment inscription "Destiny Walking Record" subverts historical understanding.
