In order to save the world from Devil God Tantai Jin (澹台烬), Li Susu (黎苏苏), daughter of Hengyang Sect's leader, travels back 500 years and takes over the body of Ye Xiwu (叶夕雾). She is tasked with preventing the mortal Tantai Jin from becoming the Devil God by extracting his evil bone. Unbeknownst to her, Ye Xiwu is married to Tantai Jin, who is currently a hostage prince from the Kingdom of Jing (景国).