A Greek Fisherman brings an Atlantean Princess back to her homeland which is the mythical city of Atlantis. He is enslaved for his trouble. The King is being manipulated by an evil sorcerer who is bent on using a natural resource of Atlantis to take over the world. The Atlanteans, or rather the slaves of Atlantis, are forced to mine a crystalline material which absorbs the suns rays. These crystals can then be used for warmth. The misuse of science has created weapons out of the crystals that can fire a heat ray to destroy whatever it touches.

Candace Hull, the 16-year-old daughter of American diplomat John Hull, in London, is a classmate and friend of many other daughters of diplomats from various countries, and gets invited to lots of social affairs. While visiting Mai-ling, niece of the Red Chinese ambassador she stumbles into a major political secret, involving a murder. Secretly,she passes this information to a CIA agent, Wally Sanders, on whom she has a crush. Candy gets into playing secret agent to the extent of even putting some teen-age seductive moves on the boy friend of her Soviet classmate, but this doesn't work out well because he is a secret agent

A dedicated FBI agent recalls the agency's battles against the Klan, organized crime and Communist spies.