Princess Liu Chang Sheng from the Fu Yu Kingdom has the label of "husband-killer" attached to her name. As she reaches the age of marriage, she worries about finding a suitable husband. The Emperor intends to send her to the Da Tang Kingdom to marry the ruthless and bloodthirsty Prince Qin Li Jing, who is known as the "Jade-Faced Demon". With the mission of "killing husbands to save the country", Chang Sheng and Li Jing embark on a comical and absurd journey. As they get to know each other, they overcome prejudices, ignore rumors, and bravely pursue love, ultimately discovering the true meaning of love.
A fallen queen, Jiang Xuening who aspired to have the highest power and authority in her life was held hostage by rebels after the king, Shen Jie was poisoned. In this life, she used everyone around her to reach the authority of the queen but in the end, she remained under house arrest and Xie Wei slaughtered the entire city. Later, she received the decree to be buried with the emperor. She got a second chance to change her fate by not entering the palace but when she woke up after rebirth, she was already messing around. Even though she vowed not to enter the palace, a certain turn of events again entangles her with the palace and Xie Wei whom she hated the most.
The emperor's grandson Li Ni, guards the border and is forced to take on the responsibility of quelling the rebellion. Although Li Ni is the grandson of the emperor, he was never loved by his father. He hides his identity and is content with being a carefree frontline border general who has no intention of fighting for power. During military campaigns against the rebels, he encounters the ambitious Cui Lin, who is the only daughter of General Cui Yi, the commander of the Cui family army. Cui Lin concealed her true identity and disguised herself as Lieutenant He, fighting alongside the army. They cross paths with each other many times on the battlefields. One is scheming and witty, the other is guileful and forthright. In their competitiveness with each other, from time to time they calculate and predict each other's plan and movement to fight as the winner which leads them down the path of falling in love.