When Song Xiaoyu is unexpectedly dragged into a predetermined world as a tragic heroine—destined to be abandoned by the villainous male lead—she tries to escape, only to find herself trapped in an endless cycle of fatal outcomes every time she strays from the plot. No matter how much she resists, the story keeps pushing her toward Nan Heng, the cold and calculating male lead. As she navigates this paper-thin world, where every character is bound by fate, Song Xiaoyu must fight not only for her own survival but also for control over her own story.