Riley, a rebellious human princess, always preferred the thrill of guild missions and the use of her magic over her royal duties. Neglecting her responsibilities, she left the burden of the throne to her younger sister. Though destined to become the future human queen, Riley chose to abdicate and live a life of adventure and freedom. However, her carefree life shatters when Seraphine, the future demon queen, murders Riley’s beloved. After a bit Riley is captured and imprisoned for treason against the demon queen. Her life takes a tragic and unexpected turn. In a twist of fate, Riley discovers that she is the perfect match for the future demon queen, Seraphine. Fueled by a burning desire for revenge, Riley is determined to make Seraphine pay for her lover's death. As their paths intertwine, Riley will stop at nothing to bring Seraphine to justice, even if it means confronting her own demons and challenging the destiny that binds them.