Shen Ruojin died unjustly in her previous life, and was reborn on her wedding day. Her husband-to-be, Pei Jing, eloped with his concubine. She decisively married Qin Lang, the demon king of the capital and Pei Jing's brother-in-law. After the marriage, Qin Lang changed from being a playboy to fully supporting Shen Ruojin. However, Shen Ruojin had doubts about Qin Lang's feelings due to trauma in her previous life, and faced a one-year divorce agreement. The villains kept making obstacles in order to destroy her revenge and feelings. In this complex environment, Shen Ruojin must not only break through gender discrimination, complete revenge and enhance power within one year, but also resolve misunderstandings with Qin Lang, deal with emotional entanglements, and write her own legend in the intertwining of bitterness and sweetness.