Marquess' daughter Anuella is told by her fiancé, Crown Prince Thadious, that she is to become his concubine. It seems the beautiful duke's daughter, Miria—the girl standing beside him—will be his official wife. In this country, a concubine is nothing more than a mistress. Shaking with despair and anger, Anuella has no choice but to accept the position. But once her days of humiliation as a concubine begin—when she loses her status, her honor, and even her dignity—something inside Anuella snaps.

...I have no obligation to remain his concubine.

From that moment, she resolves to live for herself. Thus begins the exhilarating rise of a woman who was cast aside—her unstoppable, refreshing counterattack starts now!