Qiao Anan transformed into a cute princess who was about to marry the enemy's bloodthirsty proton Xiao Jingheng. In despair, a cold mechanical voice sounded in his head: [Ding! The marriage matching system has been bound! Mission: Cultivate a relationship with His Highness Proton and save the world! Qiao Anan is confused, relying on falling in love to save the country? There is something wrong with this system! Xiao Jingheng is cold and vigilant, she is clumsy in "business", and she almost throws medicine in his face when they first meet, causing death on the spot! But the system prompts: [Love value +1, peace value +1! In order not to be "sacrificial flag", Qiao An'an bit the bullet and started a "weird strategy war". From the initial awkward chat and delivering water to joining forces to expose the palace conspiracy and resolve the border crisis, she melted his cold heart bit by bit with her sincerity. He goes from scrutinizing to curious to exuding tenderness. When the love value and peace value both explode, the world seems to be saved? However, a new crisis is coming quietly... Can this love between family and country, which involves marriage first and love later, really bring peace to the world?