Xie Zhaoning, the legitimate daughter of the Defender of the Country Duke, was plotted against by the Third Prince Xiao Jingheng and Liu Ruying in her past life, resulting in her entire family being beheaded. She is reborn with bitter hatred on her wedding night. Seeing through the scheme, she breaks off the engagement in public and marries the deposed crown prince Xiao Chengyi, who had previously sought justice for the Xie family. Together, they gather evidence to expose Xiao Jingheng's conspiracy. The villains finally receive severe punishment, and Zhaoning and Xiao Chengyi guard each other both ways, welcoming a peaceful remaining life.