In the kingdom where Christine lives, love marriages have become wildly popular ever since the king married a commoner. Now, even married people are encouraged to get divorced if it means finding their “fated love.” Sick of this chaotic trend, Christine agrees to a contract marriage with Leon—a stranger she happens to meet—under one condition: they will never divorce. But soon after, Christine discovers that Leon is actually the infamous “Demon Chancellor” of the kingdom! To make things even more complicated, Christine, working incognito as a plain-looking government clerk, is suddenly appointed as his exclusive aide!