Synopsis：Li Xuan, an alliance leader obsessed with slaying demons to achieve immortality, firmly believed that all demons were evil. After wrongly harming a benevolent demon, his path to immortality was lost. Invited to Chuku City to eliminate demons, he was deceived by the Nine Nether God from the demon realm and insisted on harming Chu Yu, a benevolent demon who aided the world. In the ensuing chaos, his body was taken over by the Nine Nether God. Forced to inhabit another person's body, Li Xuan finally realized the truth: Chu Yu had been guarding his past life for a hundred years. In the end, he defeated the Nine Nether God, refused the immortal seat, and remained in the mortal world to protect all living beings.