Chen Wuyan had just transmigrated into the cultivation world when he was mistaken by hundreds of great demons for a demon king who had undergone the heavenly tribulation to take human form. With no cultivation base whatsoever, he had no choice but to bite the bullet and impersonate the Exalted Lord, acting unfathomably profound on one side while figuring out ways to save his own life on the other. Unexpectedly, he received the assistance of an immortal sword and further awakened the chaos power, getting successively entangled in the disputes between humans and demons. Faced with sect encirclement and suppression and the demon clan crisis, he joined hands with partners such as Huoli, established rules, built a sect, grew from a fake demon king into the true reliance of all demons, and resolved to break the prejudices between humans and demons, walking out a path of coexistence.