Regina, whose father was the emperor that got assassinated, became the regent on behalf of her younger brother.

While facing plenty of hardships, news about the depletion of national funds due to her maniac younger brother's behavior, as well as her fiancé having an affair, begin to spread...

In the end, she loses everything when her fiancé commits treason.

In her last moments, she turns back time using the relic of the first emperor. In order to stop the main culprit, Regina declares that instead of a maniac, her brother will become a love-crazy fool.