Plot: Deep-sea divers Brad Carlton and Tony Bartlett are hired by Dwight Trevor to locate $1,000,000 in gold bullion sunk with the ship "Lady Luck." But, there's no trace of the ship because of a scheme between Trevor and the supposedly-missing captain of the ship. The "Lady Luck" is actually amid the ruins of a submerged city. Following and underseas earthquake, some menacing voodoo drums, and a whole lot of scheming and counter-scheming, the villains are disposed with, and the heroes get the girls.
Alternative Plot: Two deep-sea divers (Robert Ryan, Anthony Quinn) become rivals for the gold bullion of sunken Port Royal, Jamaica.
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