In her previous life, Shen Changning, the legitimate daughter of the Duke of Zhenguo, devoted her family's entire military power to supporting Prince Jing, Xiao Jue, only to meet a tragic end. Reborn before the tragedy unfolded, she awakens to the truth on a rainy night in an abandoned temple and resolves to protect her family and seek a peaceful, stable life. Her cousin, Liu Wancui, who lives in the household, is ambitious and covets power, repeatedly setting traps in an attempt to take Changning's place. Su Yanci, a top-ranked candidate in the palace examination who carries regrets from the past, is determined to keep her safe. They pursue each other wholeheartedly and remain devoted to one another.