Magic is illegal under the mountain, but one warlock-turned-prison guard is no big deal until a baby OwlCat shows up. Before Nulthir can take the little fella to safety, he’s attacked by a stranger with a mysterious object that infects him with dark magic and kicks off a dangerous transformation. Nulthir thought he’d escaped the darkness that nearly destroyed his family, but he was wrong. That evil is turning him into a monster while he struggles to protect his friend’s grandson. But the attack was just the opening move in a deadly game designed to trap a powerful young mage. Through that kid, the summoners can create an army of monsters. Nulthir and his mind-talking OwlCats are in for the fight of their lives, even if they get to the mage first. If they fail, they’ll be fodder for the next wave of monsters. Find out how they'll stop the monsters who threaten their world.