Part Three of a four-part series! A mysterious force has reactivated the Brut’hara. As they come back to life with new and dangerous intent, Scott and Gus find themselves trapped on Vanguard base, fighting with soldiers against the soulless drones. Meanwhile, in deep space, Aurora explores the interior of the mysterious Ark, wondering what intelligence might be behind its strange design, and is its creator a potential friend – or foe?