Phaedra is a poor sponge diver on the lovely Greek isle of Hydra. While diving, she discovers an ancient brass and gold statue of a boy riding a dolphin, which is said to have the magical power to grant wishes. Her shiftless boyfriend wants to sell it to an unscrupulous art collector, but Phaedra wants to give it to anthropologist Jim Calder, who would return it to the Greek government.
In ancient Egypt the Pharaoh Khufu is obsessed with acquiring gold and plans to take it all with him into the "second life." To this end he enlists the aid of Vashtar, an architect whose people are enslaved in Egypt. The deal: build a robbery-proof tomb and the enslaved people will be freed. During the years that the pyramid is being built a Cyprian princess becomes the pharaoh's second wife, and she plots to prevent Khufu from taking his treasure with him when he dies .. as well as helping him make the journey early.
One night in the New Orleans slums, vicious hoodlum Blackie and his friends kill an illegal immigrant who won too much in a card game. The next morning, Dr. Clint Reed of the Public Health Service confirms the dead man had pneumonic plague. To prevent a catastrophic epidemic, Clint must find and inoculate the killers and their associates, with the reluctant aid of police captain Tom Warren, despite official skepticism, and in total secrecy, lest panic empties the city. Can a doctor turn detective? He has 48 hours to try.
Two Foreign Legion soldiers, Jean (Dennis O'Keefe) and Andre (Jean Pierre Aumont), accidentally discover the famed lost continent of Atlantis. Bewitched by the sultry, beauty of the Queen of Atlantis (Maria Montez) the two men vie for her affections; little realising that her previous lovers have been embalmed into statues that line the passages of her kingdom.
In order to help bring Nazis to justice, U.S. government agent T.R. Devlin recruits Alicia Huberman, the American daughter of a convicted German war criminal, as a spy. As they begin to fall for one another, Alicia is instructed to win the affections of Alexander Sebastian, a Nazi hiding out in Brazil. When Sebastian becomes serious about his relationship with Alicia, the stakes get higher, and Devlin must watch her slip further undercover.
