The Jade Emperor's sister Yao Ji (Liu Tao) secretly married the mortal scholar Yang Tianyou (Li Guangjie) and gave birth to three children. Upon learning all this, the furious Jade Emperor (Wang Weiguo) killed Yang Tianyou and pressed Yao Ji under the Peach Mountain for eternity. Fortunately, Nezha arrived in time to save Yao Ji's children Yang Jian (Jiao Enjun) and Yang Chan (Zhou Yang) from the Jade Emperor's butcher knife. After growing up, Yang Jian became the apprentice of Taiyi Zhenren and learned a great skill. Yang Jian wanted to save his mother, but the Jade Emperor sent ten suns to burn Yao Ji to death. The angry Yang Jian made a big fuss in the Heavenly Palace, and the Jade Emperor sent a flood. However, the water did not drown Yang Jian, but fell into the mortal world, and all the lives were destroyed for a while. Yang Jian decided to put aside his grievances with the Jade Emperor and go to the human world with his sister to control the water.