Two scuba divers find a shipwreck which may contain undiscovered treasure, however, their attempt to salvage it is threatened by scavengers.

In 1968 the Soviet ballistic missile submarine K-129 sank in the Central North Pacific. American intelligence located it within weeks of its demise. The CIA crafted a secret program to raise the submarine in 1974. Now after much secrecy, this story can be told, by the men who made it happen and with never-before-seen footage of the actual salvage attempt, and new evidence of the project's successes and failures.