In San Francisco, a psychopathic gangster and his mentor retrieve heroin packages carried by unsuspecting travelers.

An American woman arrives in Hong Kong to unravel the mystery of her missing photographer husband. After getting nowhere with the authorities, she is led by some underground characters to an American soldier of fortune working in the area against the Communists. He promises to help find her husband.

Robert L. Scott has dreamed his whole life of being a fighter pilot, but when war comes he finds himself flying transport planes over The Hump into China. In China, he persuades General Chennault to let him fly with the famed Flying Tigers, the heroic band of airmen who'd been fighting the Japanese long before Pearl Harbor. Scott gets his chance to fight, ultimately engaging in combat with the deadly Japanese pilot known as Tokyo Joe.

A group of men parachute into Japanese-occupied Burma with a dangerous and important mission: to locate and blow up a radar station. They accomplish this well enough, but when they try to rendezvous at an old air-strip to be taken back to their base, they find Japanese waiting for them, and they must make a long, difficult walk back through enemy-occupied jungle.

This is the story of the crew of a downed bomber, captured after a run over Tokyo, early in the war. Relates the hardships the men endure while in captivity, and their final humiliation: being tried and convicted as war criminals.

Dishonorably discharged from the U.S. Marines after starting a barroom brawl that gets his leatherneck buddy "Tubby" Waters killed, hothead "Woody" Davis infiltrates a gang of Shanghai gunrunners to bring the culprit to justice.

A philosophy professor accompanies his school's rowing team on a worldwide tour.

Stephen Ghent, a mineowner, falls in love with Ruth Jordan, an arrogant girl from the East, unaware that she is the daughter of his dead partner. Ruth is vacationing in Arizona and Mexico with a fast set of friends, including her fiancé, Edgar. Manuella, a Spanish halfbreed hopelessly in love with Ghent, causes Ruth to return to her fiancé when she insinuates that Ghent belongs to her. Ghent follows Ruth, kidnaps her, and takes her into the wilderness to endure hardship. There she discovers that she loves Ghent, and she discards Edgar in favor of him.