A young Japanese-American orphan in California is taken in by a priest who is actually a Japanese secret agent and a samurai warrior. Due to the samurai's training, the boy murders his English teacher, kills the American parents who have adopted him, smuggles Japanese secret plans into the country, and eventually becomes the governor of California with plans to infiltrate Japanese spies into the state so they can take over.
A carnival showman tries to keep Japanese spies from sabotaging the Panama Canal.
Shortly before Pearl Harbor, American opportunist Jones and partner Johnny are in China to sell oil to the invading Japanese army. Cynical about the sufferings of the Chinese, Jones meets compassionate teacher Carolyn Grant while travelling cross-country to Shanghai. Sparks fly between these strong-willed characters, neither budging an inch. But when Jones witnesses a Japanese atrocity, his feelings toward his customers (and Carolyn) begin to change...
Two-fisted newsreel photographer Johnny Williams is stationed in Burma and China in the early stage of WW II. Captured by the Japanese, he escapes from a concentration camp with the aid of beautiful, enigmatic 'China Girl' Miss Young. The two arduously make their way back to friendly lines so that Johnny can deliver the vital military information he's managed to glean from his captors.
King of the Candian riding police is up against Japs and Nazis who are about to invade Canada. They just want to clear the way with a new futuristic plane called "The Falcon" first, but that's not gonna happen if Kig has his way.
Foreign spies and police pursue an attractive Dutch spy throughout Peking.
Rick Leland makes no secret of the fact he has no loyalty to his home country after he is court-martialed out of the army and boards a Japanese ship for the Orient in late 1941. But has Leland really been booted out, or is there some other motive for his getting close to fellow passenger Doctor Lorenz? Any motive for getting close to attractive traveler Alberta Marlow would however seem pretty obvious.
Judy O'Brien is an aspiring ballerina in a dance troupe. Also in the company is Bubbles, a brash mantrap who leaves the struggling troupe for a career in burlesque. When the company disbands, Bubbles gives Judy a thankless job as her stooge. The two eventually clash when both fall for the same man.
While participating in a contest at a local newspaper in which school children are asked to submit a news story, local attorney Carson Drew's daughter Nancy intercepts a real story assignment. She "covers" the inquest of the death of a woman who was poisoned. Nancy doesn't think the young woman accused of the crime is guilty and corrals her neighbor Ted into searching for a vital piece of evidence and stumbles onto the identity of the real killer.
In Shanghai amidst Sino-Japanese warfare an adventurer (Sanders) collecting money from gun suppliers falls in loves with a French singer (Del Rio).