At the end of the Shang Dynasty, the general of the East China Sea, Yaksha, conspired to usurp power and attempted to assassinate the daughter of the Dragon King in order to achieve his goal of ruling the East China Sea. Unexpectedly, his plot was accidentally discovered by Nezha, the son of Li Jing, the general of Chentangguan. In order to cover up his tracks, Yaksha framed Nezha for the crime of assassinating the Dragon Girl and turned him into a public enemy of the Dragon Clan. On the other hand, Nezha was ordered by the strange fairy Taiyi Zhenren to go to Jinguang Cave to practice Taoism. On the way, he met the Dragon Girl who lost her memory due to Yaksha's assassination, and Tuxingsun who was proficient in the art of transformation and escaping the earth. All three of them were accepted as disciples by Taiyi Zhenren. Just when Nezha and his group were secretly learning magic, Yaksha led a large force of the Dragon Palace to Chentangguan, and a war was about to break out.