From a modern best-selling historical writer, Shen Buyan embarks on a thrilling adventure to save Lu Yuan's fate by encountering a generation of "demon queens" who have gone through a long history. A millennium long love story that runs in both directions takes place on a time-line that runs counter to her. When she is deeply in love, she doesn't know it. When he stood at the end of the story, her story had just begun. In this river of reverse time that was destined to pass by, where should the two go?