Wukong journeys to Heaven and learn the secret to immortality. Wukong befriends the Demon King, who appeals to Wukong's ego and tempts him with Heaven's treasures, including immortality. The pair are attacked by Nezha, but is killed by the Bull Demon King. He promises to make her immortal after learning she will die when she turns 200 years old.

The Vixen, who reveals her name to be Ruxue, reunites with her old friend, Wukong. After the Dragon King informs Heaven of Wukong's destruction, Erlang sends Nezha to arrest him. She is revealed to be the nine-tailed fox and the Demon King as the force that whisked her away, claiming to have saved her life. The Bull Demon King asks a young Vixen if she'd like to meet her old friend again. After defeating the Dragon King, Wukong becomes intrigued by a staff planted in the sea. Wukong travels to the palace of the Dragon King to find weapons for the Mount Huaguo monkeys. The plan is kept secret from Princess Iron Fan, who is pregnant with the Demon King's child. Erlang agrees to help the Demon King in exchange for getting to kill his uncle and take Heaven's throne. The Bull Demon King plans to invade heaven again by using Wukong and preying on Erlang's anger towards the Jade Emperor. Years later, the monkey is taken in and trained by Subhuti, naming him Sun Wukong. A nine-tailed fox is scarred after touching the crystal and whisked away by a mysterious force. One of the crystals falls to Mount Huaguo, taking the form of a monkey over time. The Jade Emperor appoints his nephew Erlang Shen to guard the Southern Gate, despite Erlang's resentment of the task. The goddess Nüwa sacrifices her body to rebuild Heaven with crystals. The Emperor's sister and Bull Demon King's lover, Princess Iron Fan, convinces the Emperor to spare him and banishes him, Princess Iron Fan, and the rest of the demons to Flaming Mountain. During an attack on Heaven, the Bull Demon King battles and loses against the Jade Emperor, the ruler of Heaven.

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