Bella, Gwen, and the Lost Boys have escaped to Alnwick Castle, but it is not the safe haven they hoped it would be for the "cure" for the Horologia virus has mutated into something even worse--so the Duchess Alyssa and Maddox Hadder set out searching forthe virus's origin, an extinct poisonous apple, supposedly from a tree at the center of a labyrinth hidden deep within Germany and guarded by monsters.

Using magic to control the golems he has raised, the legendary Sleeping Prince has woken, killed King Merek, and taken Lormere, and many of its people are refugees, including Errin and her sick mother--but there are those who oppose the Prince, and Errin,a skilled apothecary, may hold the key to ending his power.