The story follows a young noblewoman whose fiancé, the crown prince of her own kingdom, abruptly forgets her existence after a magical accident during their engagement ceremony. Cast aside and publicly humiliated, she is left without status or explanation, as no one can reverse the memory loss. In the political upheaval that follows, the neighboring kingdom’s crown prince arrives to renegotiate alliances and, observing her plight, proposes a fake engagement to stabilize both realms. She accepts out of necessity, expecting a cold, transactional arrangement. However, her new fiancé treats her with unexpected warmth and consideration, and she soon notices that his attentive behavior goes far beyond what a mere political ruse requires. As she navigates diplomatic intrigues, court rivalries, and the lingering pain of being erased from her first love’s memory, she begins to uncover hints that her new partner’s feelings might be genuine—and that he may have known her long before their formal introduction. The narrative alternates between her growing emotional confusion and the mystery of why her original fiancé’s forgetfulness seems too convenient to be accidental. Key arcs include her adjustment to a foreign court, a series of assassination attempts tied to the succession crises in both countries, and flashbacks that slowly reveal a childhood connection between her and the neighboring prince. The romantic tension escalates as she realizes that her fake fiancé’s devotion predates the engagement, and that his real aim may be to win her heart for himself, while the original fiancé occasionally experiences unsettling déjà vu that threatens to unravel the political settlement. The story culminates in a confrontation where the magical memory loss is traced to a deliberate curse, forcing her to choose between restoring her past relationship or embracing the future with the man who never forgot her.