The East. The cursed land where the sun never rises, always engulfed in dreary weather, swarmed with criminals, and where depression is the norm. And the monster who governs over this land is the Duke of Eckard.

Hedel, who was on the verge of marrying her cousin, receives a marriage proposal from this monster Duke. Although everyone opposes her, Hedel had no choice but to accept the Duke's proposal...

"I've never had this kind of food before!"
"Ever since Madam's arrival, the sun seems to always set here...!"
"The East can never live without Madam anymore."

It seems Hedel has done very well in taming the people from the East.

This is the story of Hedel occupying the East, that starts with marriage.