Millions of years ago, the Demon Lord led his forces in an assault on the Heavenly Palace, aiming to unite the Three Realms. It was an unprecedented war between immortals and demons. Demonic energy surged above the Heavenly Palace, and countless lives were lost. The Demon Lord and the Heavenly Emperor were evenly matched. To prevent further casualties among the heavenly soldiers, the Heavenly Emperor finally sacrificed his primordial spirit, sealing the Demon Lord beneath Mount Jiuhua. In that battle, nine fragments of the Heavenly Emperor’s primordial spirit were destroyed on the spot. The final fragment fell into the mortal world. After millions of years, it was reincarnated as a human and became Bai Chen, the young master of the Bai family. Soon after Bai Chen was born, the Bai family was slaughtered by the demons. Guided by an immortal, Bai Chen joined Lingxian Mountain to cultivate. This is the story of how he and Wan Yue, the demon clan’s saintess, became locked in a love-hate relationship.