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.

After losing her husband and daughter in an explosion, full-time housewife Wen Xin discovers the ability to reverse time. With a twelve-day time gap, she races against fate, making relentless attempts to save her family.