Liu Changsheng (Qi Yuchen), the princess of Fuyu, is destined to be a "husband killer". When she reaches the marriageable age, she is worried about getting married. The emperor intends to send her to Datang to marry Li Jing (Wu Junting), the jade-faced Rakshasa Qin Wang who kills people on the battlefield. With the mission of "killing the husband and saving the country", Changsheng and Li Jing start a ridiculous romance. In their relationship, the two get rid of prejudices, are not afraid of rumors, bravely pursue love, and find the true meaning of love.