Mu Qingsha was once the eldest daughter of the Mu family. She had a loving mother who cherished her, but after her mother died, her father's old flame showed up with two daughters of her own. For the sake of the Mu family's reputation, her father let the three of them move in and gave the girls the names Qingwu and Qinghuan. Mu Qing had never doubted that her mother had died of natural causes, until one day she accidentally overheard her two older sisters talking. Everything she had suffered in the Mu family over the years, including the true reason for her mother's death, was part of a scheme involving her stepmother, Jiang Lingshan, and her two daughters. At last, unable to bear it any longer, Mu Qingsha stormed into the room and fought with her sisters. Her second sister, Mu Qinghuan, accidentally pushed her down the stairs. When Mu Qingsha woke up again, she realized she had returned to life as Mu Qingsha. In this new life, she was determined to repay her stepmother and the others for all the pain they had inflicted on her in her previous one.