After years as a Ranger's Apprentice, Will is now the protector of his first fief. Not long into his service, everything that can go wrong, does: Keren, a renegade knight, has taken over Castle Macindaw, a strategic gateway to the North
- poisoning the royal family in the process
- & is holding Will's friend Alyss captive. The situation grows worse when Will uncovers Keren's secret alliance with the Scotti, who have plans to plunder Araluen. Time is of the essence, & Will must recruit a motley crew to rescue Alyss & reclaim Castle Macindaw, before the Scotti can make it their own.