Master of the Hunter’s Guild, who storms Blackthorn Castle with her six‑year‑old daughter Lilith. The little girl calls vampire duke Sebastian Crawford “Daddy”, yet Sebastian’s memories of them were erased by the villain Vester Ashford with an obsidian ring. On a blood‑moon night six years ago, Vester abducted newborn Lilith and bound her soul as the key to the deepest sanctuary gate. To save her daughter, Isolde forms an uneasy alliance with the amnesiac Sebastian. Racing against the blood‑moon countdown, they fight Vester’s controlled hunters and blood nobles, uncover his conspiracy including falsified official orders and the murder of Isolde’s parents. In the end, the trio destroys the obsidian ring and seals the fatal gate forever. Though trauma lingers, they get a chance to rebuild their broken family.