Someone—or some —is decimating ships and sea life off Hawaii's coast, and Max and her flock find themselves sucked into the Navy's top-secret investigation of the catastrophe. Their objective: rescue Max's activist mom from a wicked subterranean enemy. The hitch: They must dive deep into dark waters, where gruesome evil dwells . . . and for high-flying Maximum Ride, could there be more terrifying than being trapped in the great abyss? With sky-high thrills, this soaring adventure takes Maximum Ride and the Flock into terrifying new territory—fans, hold your breath!