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.