After Nezha and Ao Bing were reborn in the form of souls, the three realms seemed to have returned to peace, but in fact there was an undercurrent. Heaven violated the rules of heaven because of the "unity of magic pills and spirit beads", and secretly planned to punish Chentangguan. In the abyss of the East China Sea, the sealed ancient demon god awakened due to the leakage of the power of the heavenly tribulation, and attempted to devour Nezha. Although Nezha became a hero in the hearts of the people, he fell into self-doubt because the remaining demonic nature in his body was difficult to control. Ao Bing shoulders the mission of reviving the dragon clan, but is coveted by the devil because of the power of the spirit beads, and becomes the key to the struggle among the three realms. At the same time, a mysterious girl (suspected to be a descendant of Nuwa) appeared in Chentangguan, and her prophecy pointed directly at the "destined fate" of Nezha and Ao Bing.