The immortal bones were picked off, the glory of the past was gone, Shan Nai fell to the bottom of the valley, and his life was in danger. In desperation, she chose to rely on the yandere demon king Cang Qilan in exchange for a chance to survive. In the cold and treacherous magic palace, paranoid possession and tender care are intertwined, testing at every step and pulling at every turn. She repeatedly struggled for survival and love. This relationship that started as a life-saving relationship gradually deviated from the preset track and created an alternative fairy-tale romance.