They've found the Titanic. There's just one thing left to do...

A search by the American special services for a material vital to national security leads to the world's most infamous shipwreck - the Titanic. They believe the might 'unsinkable' ship was carrying a supply of a vital material that could be used to make the United States impregnable to atomic attack.

The wreck lies too deep for divers to reach, so the only solution is to raise it. But the Herculean project must be managed in absolute secrecy - this despite the extreme rigours of the climate, the need to work with previously untested technology and deadly interference from a rival nation...