The most powerful warship in the world, the nuclear-powered U.S. Nimitz-Class aircraft carrier is seen as impregnable. But when the USS Thomas Jefferson suddenly disappears at sea, the Pentagon is stunned. There are no survivors, and all signs point to a tragic nuclear accident.

While the world stands in shock, reports suggest that it was no accident. A rogue submarine armed with nuclear warheads may be on the loose. Where did it come from? How could it get within striking distance of the Thomas Jefferson? Worse yet, where is it now and could it strike again? The tension mounts, and a deadly chase begins.