In the prosperous Tang Dynasty, a "divine stone" containing alien laws broke through the sky and fell into Dunhuang. The power of the divine stone not only brought about the craze of steam technology, but also awakened the ancient energy sleeping deep in the murals of the Mogao Grottoes! Painter Su Yehan, a young man who was obsessed with the flying gods and Buddhas in the murals, unexpectedly discovered on the night when the sacred stone came that he could resonate with the murals, activate the runes hidden in them, and even summon the phantom of the "God of Machines" depicted in the murals! The imperial court regards the divine stone as destiny, and wants to seize the secret key and build a "divine machine army" capable of conquering the world; the tribes in the Western Regions regard the divine stone as a "scourge of heaven", fearing that its power will subvert the laws of heaven and earth, and vow to stop it. As for the power of this sacred stone, every time it is used, it is accompanied by the risk of "digitization" of the body. The user will gradually lose emotion and become a cold "machine god". Su Yehan, guided by the murals and sacred stones, embarked on a road full of thorns. He must struggle on the edge of human nature to unlock the true secret of the "God of Machines" in the murals. Using the brush as a guide and the sky as a furnace, he can refine the real "God of Machines", fight against all forces, and finally take control of the sky and redefine the future of the Tang Dynasty!
