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.

Three thousand years ago, Mo Bing was betrayed and had her heart gouged out, transforming her into a half-human, half-puppet existence. In pursuit of regaining her human form, Mo Bing searched for a millennium and finally discovered the "Heart of Flame." However, its owner, Mu Yuanqi, held a triple identity just like her. When Mo Bing forcefully married into his household, a series of tests and tensions unfolded. Slowly, a drama filled with purpose and conspiracy, both sweet and torturous, began to unfurl.