Sun Wukong has gone through ninety-nine and eighty-one reincarnations. He once suffered from headaches and serious illnesses as Cao Cao, and he also reincarnated as Li Shimin and was treated well by the King of Hell. In this life, he was reincarnated as the young Sun Xiaokong, carrying fragmented memories of his past life and the supreme Tao foundation to practice in the human world. The law of reincarnation in the underworld has collapsed, and the cause and effect of the past life has turned into obstacles and backfired in this life. While resolving the supernatural crisis in the city, Sun Xiaokong met Lin Qingyao, a gentle, tough and perceptive heroine. The two protagonists fight side by side and uncover the truth behind the collapse of heaven and the changes in the underworld in crisis after crisis. Faced with Cao Cao's heroic obsession and Li Shimin's imperial karma, Sun Xiaokong resolved the hostility with compassion. In the end, the two of them realized the great truth, broke the fate of reincarnation, reshaped the laws of the three realms, and transcended eternal life.