When a fleet of unmanned aerial drones disappears, the U.S. vice president turns to Matt Garrett, still nursing the wounds he suffered in the Phillipines. The situation worsens when an enemy combatant commandeers Garrett's jet, and a former Iraqi general with a startling link to Garrett's brother emerges from hiding. Matt discovers that terrorists have kidnapped the world's expert on nanotechnology - and that coupled with the missing Predators, the enemy may have created the ultimate capability to locate, track, target and kill. Meanwhile, the enemy has launched a flurry of attacks throughout America's heartland. The country is on the edge as citizens wonder whether the terrorists have the capacity to deal a devestating blow with weapons of mass destruction. But Garrett is beginning to suspect that the true enemy may be all to close to home.