The Phoenix goddess Feng Ling was reborn before the prince Cang Zhuo broke off their engagement. In order to avoid the tragedy of the whole family being massacred by the possessed Cang Zhuo in the previous life, she took the initiative to fulfill the engagement between Cang Zhuo and the mortal girl Xu Qingqing. She was well aware of Cang Zhuo's paranoia and the Queen's calculations, so she turned to support Wu Sheng, who was fostered in Qifeng Mountain and seemed to be frail but was actually the reincarnation of Zhu Long. Cang Zhuo repeatedly violated the rules of heaven for Xu Qingqing, stealing treasures and releasing ferocious beasts, and was eventually deposed as the crown prince. Feng Ling reveals the truth that the Queen of Heaven colluded with the Demon Lord to kill her parents. Wu Sheng also awakens his divine power, and the two work together to put down the chaos between the immortals and demons. In the end, Wu Sheng ascended the throne as the Emperor of Heaven and told the three realms to marry Fengling. The two ruled the three realms together and ended the grudges from their previous lives.
