Elzanes, the eldest daughter of the Crocus family in the Kingdom of Lobelia, frequents glamorous high society, so people call her a "wicked woman" who flaunts her money and power and has a cold personality.
In place of her younger sister Liliel, who works for the peasants in contrast to her, Elzanes heads north alone to marry Lucaruen of the Amaryllis Empire, who calls himself the "Monster of the North". Lucaruen welcomes Elzanes when she arrives and treats her well, but as they talk about their marriage, they begin to understand each other's true intentions...