Dirk Pitt of the National Underwater and Marine Agency leads a team to the Antarctic to find out why dolphins and seals are disappearing from around Seymour Island. This brings him in conflict with a mining company which is using deadly sound waves to drill for diamonds. But it also brings romance with the villain's beautiful daughter.

Win Liberte has it all. He prides himself on never having worked a day in his life. He has everything he wants - fast cars, beautiful women, a racing yacht, a penthouse in Manhattan. Orphaned at eleven, Win inherited an international diamond business that is managed by his uncle. Then Win loses it all when his uncle commits suicide after investing all of Win's money in a scheme that fails. His single remaining asset is a bankrupt diamond mine in...