Xiao Zhe transmigrates through time and space to find Ling Yaoxue, only to discover that, for some inexplicable reason, she has become his sister-in-law, the emperor's wife. At last, when the emperor dies, Xiao Zhe begins his quest to win her heart. He shamelessly pesters Ling Yaoxue every day, and little by little, she opens the door to her heart.
Meanwhile, the newly enthroned emperor faces an unstable court, powerful enemies invading from abroad, and treacherous ministers within. To protect Ling Yaoxue and ensure her son can securely take the throne, Xiao Zhe decides to don his armor and pacify the realm for her. After three months of warfare, he is gravely wounded, but finally quells the unrest and forces the enemy to sign a pact never to invade again.
On the way back to the capital, Xiao Zhe is ambushed by Xiao Yihuan and nearly loses his life. With the last of his strength, he makes it back to the capital to see Ling Yaoxue. She is now caught in a dilemma: because of her status, she can only be a stranger to him, yet she cannot help thinking of everything Xiao Zhe has done for her and does not know how to respond to his love. And
