A cyberattack on an obscure U.S. dam leaves thousands dead and the government wondering who attacked it, and why. When they realize it is just the tip of the iceberg—and that the safety of all of America is at stake—the President has no choice but to call in Luke Stone.

Head of an elite, disbanded FBI team, Luke does not want the job. But with new enemies—foreign and domestic—closing in on her from all sides, the President can only trust him. What follows is an action-packed international roller-coaster, as Luke learns that the terrorists are more sophisticated than anyone realizes, that the target is more extensive than anyone could image—and that there is very little time left to save America.