The secrets of the Unseen have been revealed. Crispin and Henry have worked for years, fighting against the Unseen in an effort to protect humanity. They strive forward with every setback and won't rest until they're sure humans are safe. After uncovering more information about why the Unseen are in the area, a grim reality begins to emerge. It will test the will of the dragons and Annabel about what the right course of action should be.