Alana, the daughter of a duke, became engaged to Crown Prince Abel through a political marriage. Determined to become a worthy future queen, she devoted herself to relentless, painstaking effort. However, one day she witnesses an affair between Abel and her own younger sister, Avril. Shattered by the betrayal and despairing over everything she had worked for, Alana loses the will to live. She asks her servant, Terrence, to prepare poison for her, deciding to bring her life to an end. But then—?!