Su Qingyuan, the genius demon hunter of Xuanqing Sect, and Mo Yuan, a nine-tailed fox who was slandered as a "evil man-eating demon", collided with each other in a forbidden love between good and evil prejudices. He has a stunning appearance, but he practices good deeds. She sticks to the right path, but betrays her school for him. From the time they first met in Luoxia Valley in Qingqiu, from being chased by the Righteous Path to uncovering the secret of the reincarnation of three lives - it turns out that they were Taoist couples who were separated by the rules of heaven in their first life, and their reunion in this life is a fateful bond.
The two experienced rebirth and counterattack, survived the catastrophe together, established an unbounded alliance, fought against the hypocritical righteousness and the evil tribes outside the territory, and used the belief of "unity without boundaries" to break the iron law of "humans and monsters have different paths". From a deep misunderstanding to being dependent on each other for life and death, from fighting independently to working together as a family, they used the bond of three lives to prove that good and evil are never in the race, but in the human heart. Finally, a new order for the Three Realms was set in the Hongmeng Realm, and with love and protection, a perfect legend spanning three lives was written.