The crew of an Air Force bomber arrives in Pearl Harbor in the aftermath of the Japanese attack and is sent on to Manila to help with the defense of the Philippines.
Posing as a cattle buyer, Hoppy crosses over into Oklahoma where the Jordan brother's and their outlaw gang operate outside the law. After receiving an unfriendly reception when he finds them, he, California, and Johnny rustle their cattle and drive across the river into Texas. He hopes they will cross over to retrieve their cattle and then he can arrest them.
When Abner is mistakenly diagnosed as having only two weeks to live, his partner gets the idea that they can make a ton of money by having Abner perform all kinds of dangerous stunts.
Superman has to thwart wartime saboteurs tampering with things at the Metropolis Munitions Plant...who have captured Lois Lane and loaded her into a torpedo!
Mowgli, lost in the jungle when a toddler, raised by wolves, years later happens upon his human village and reconnects with its inhabitants, including his widowed mother. Continuing to maintain a relationship with the jungle, adventures follow.
A Nazi spy ring is after a chemical formula that increases the power of ordinary gasoline for U.S. Army aviation use. Two U.S. chemical companies are developing the formula, with each working on half for security purposes. The spies get half the formula and know that either of two chemists, Robert Norton or Tom Fielding, knows the rest. They capture Fielding, through a ruse by gang member Linda Pavlo, and threaten the life of his sister Nancy and his mother if he does not give them the formula. To protect his friend Fielding, who does know the formula and is engaged to Nancy, Tom pretends to know the secret and boards the Dawn Express plane with the spy leader and his gang.