Deep-sea diver Hawk Ridley is in search of a sunken Spanish galleon with a few million dollars in gold bullion aboard. But once Hawk and his crew's ocean journey begins, they discover a stowaway-- the beautiful daughter of one of their rivals-- and immediately suspect sabotage. While Hawk locates the prize wreck on a Caribbean seabed, it's not long before the competing Ocean Salvage Company shows up to claim the treasure for themselves and issue their own terms: give up the gold, or else. When Hawk refuses, little does he suspect the lengths to which his cutthroat competitors will go-- or the fatal consequences of his actions.