In a world ravaged by a long-standing conflict, Talasyn is an orphan soldier who hides her rare ability to wield light magic. She clashes with Alaric, the shadow-wielding crown prince of the Night Empire, until a greater threat forces their two nations into an uneasy alliance. To secure their people's future, the two enemies must enter into a political marriage while navigating their mutual animosity and the secrets of their magical heritages.