Calista, the mage who once brought down the Demon Lord, abandons her icy gifts to fulfill her late mother's final request. She becomes Count Silas's wife and Louis's devoted mother, until Silas introduces a celebrated woman warrior and insists they accept an equal marriage. Betrayed, Calista unleashes her sealed power as a Hell Lord takes hold of her rival and darkness overruns the city. With knight Elliot at her side, she must save Louis, defend the people, and choose her own future.