Gu Wanqing, as a medical doctor, accidentally time-traveled to the Southern Dynasty, but was conspired and deceived by Crown Prince Ling Qiye and Gu Ya'er, resulting in her family being destroyed and killed. Gu Wanqing sought death with all her heart. At the critical moment, Ling Cangchen forced the palace, only to let Ling Qiye spare Gu Wanqing a path of survival. Just as Ling Cangchen was about to save Gu Wanqing, Ling Qiye triggered the Gu poison that had long been buried in Ling Cangchen's body, causing Ling Cangchen to die in Gu Wanqing's arms. Gu Wanqing fell into complete despair and slit her own throat. To Gu Wanqing's surprise, she was actually reborn, reborn back to the time when she first met Ling Cangchen. Reliving a lifetime, how would Gu Wanqing make amends, how would she take revenge, and how would she live out her own life.