A modern girl, Shen Zhaozhao, transmigrates into a book, becoming the vicious supporting actress with a tragic ending. Bound to a system, she can return to reality once she completes her villainous tasks. She diligently plays the role of the villain, yet every time she causes trouble, she fortuitously saves the male and female leads, Xie Wujiu and Wen Li. The two gradually see through her true nature of having a sharp tongue but a soft heart. The hypocritical Senior Brother Lu Xuanwei catches a glimpse of the destiny book and uses the plot's villainous acts to frame Shen Zhaozhao. The system frantically corrects the plot and continuously exerts pressure. Unwilling to sacrifice her friends, Shen Zhaozhao joins forces with the protagonist group to fight against the system and the villain, breaking free from the shackles of predetermined destiny.