A hundred years ago, immortal Tian Quan kills the Mirage Lord in a battle, and the Mirage Spirit disappears from the land of Cangshuo. However, Tian Quan's soul becomes incomplete and she loses the memory of the battle. After the battle, Tian Quan goes down to the mortal world to work on the land of Cangshuo and adopts the immortal pet bird Li Xiao. Li Xiao quickly transforms into human form, and Tian Quan is moved by how similar Li Xiao’s appearance and behavior are to her former lover Shao Weili. Li Xiao is born with the ability to identify hundreds of herbs, and he goes out to treat illnesses and save people on Tian Quan's behalf. After Tian Quan realizes that Li Xiao has not returned home for days, she goes to Luoyi Town to look for him. To her surprise, all the people in Luoyi Town are killed and the Mirage Spirit has re-appeared. Tian Quan and Li Xiao work together to fight against the Mirage and resolves the town’s crisis. As the Tian Quan regains her chaotic memories, she discovers that there is some probable connection between her deceased lover Shao Weili, Li Xiao, and the Mirage she killed...