Shen Qingyan, the legitimate daughter of the Duke of Zhenguo's household, once risked her life to save the Emperor. After suffering severe injuries, she spent three years recuperating at the border. Upon her return, she faces endless difficulties imposed by her stepmother, Liu Yuru, and her third younger sister, Shen Ruoyao. They have not only seized her late mother's belongings and residence but also repeatedly humiliated her. Her biological father's blatant favoritism leaves her heartbroken. With nowhere else to turn, Shen Qingyan goes to the imperial palace and willingly agrees to marry the gravely wounded, unconscious Crown Prince Xiao Heng in an attempt to bring him good fortune and restore his health. She is subsequently bestowed the title of Crown Princess. With her exceptional medical skills, she cures Xiao Heng, and the two join forces, supporting one another through every hardship.