War rages across Heraldale. The Unicorn Empire sends its armies across the land, a blitzkrieg that every day brings the struggling gryphon nations closer to the final dreaded defeat. In the Empire's way stands Princess Galaxy, hippogryph. Together with her adoptive gryphon brother Brynjar and the unicorn Owain, she has defied the iron will of Lord Mordred, evaded the might of the Imperial Army, and saved the city of Port Oil from the ravages of the rogue magical monster Spell Virus. Now Galaxy continues her quest to bring the war to a final end, flying east to the Elderphine Forest and the secrets of her hippogryph heritage. A hidden kingdom will test her wisdom. A lonesome dragon will test her compassion. A travelling warrior will test her resolve. And a former enemy will test her ideas...to the breaking point.