The Challenger is the weapon of the future, a ceramic-hulled nuclear submarine with the most advanced electronics ever created. Acting captain Jeffrey Fuller's mission is to rescue the fast attack sub Texas, now lying on the bottom of the Atlantic. But a newly resurrected and fanatically militaristic Germany knows where the Texas is, too, and it knows the Challenger is coming. It is the Challenger the Germans want, dispatching their own high-tech supersub to destroy her.
"Just didn't cut it!"