After the ancient emperors Yan and Huang defeated Chi You at Zhuolu, the Three Realms (Heaven, Earth, and the Demon Realm) split apart. Chi You's spirit, the Demon Lord, remained undying, intent on resurrection. Time and again, he incited his followers to oppose Heaven and Earth. Xia Jie ruled without virtue, and Shang rose to power. The debauchery of Shang Zhou threw the Three Realms into chaos once more and drew the gods into the conflict. After Jiang Ziya's Investiture of the Gods, the Three Realms returned to peace and clarity, but even the Zhou dynasty could not escape its fate of ending after five hundred years. The Han dynasty that followed met the same end... It seemed that every three hundred years of good governance was followed by more than a century of chaos. In times of peace, all under Heaven was tranquil, the nation prosperous, and the people content. In times of turmoil, righteousness vanished, demons ran rampant, and the people suffered. The cycle of Heaven turned on and on. Why could it never be changed? With guidance from the gods and the aid of righteous forces, Sima Luo, a celestial emissary of his generation, restored the magical compass, subdued the demon spirit, and sought the true ruler of the mortal world. Thus began the prosperous age of the Great Tang!
