Qingming (Chen Kun), an onmyoji who travels between the human and demon worlds, signs a contract with a group of demons, which leads to disasters and puts him in a deep crisis. At the same time, the demon king is making a comeback, and a fierce battle is about to break out. At this critical moment when the situation changes suddenly and the situation is turbulent, Qingming suddenly realizes that his identity as a hybrid of human and demon is the key to all these disasters...