Superman gets caught up in a scheme to remove a large collection of diamonds originally stolen during the war. Before he can act he has to understand who the criminals are and who are innocently trying to recover their property.
Crooks have constructed a small mobile town. They use it as a speed trap to snare money from unsuspecting motorists. For bigger game, they advertise fifty cent steaks and free coffee to hijack trucks carrying valuable merchandise. After two hijackings, Lois Lane comes upon the "town" and is captured. Now, Clark Kent, Jimmy Olsen and Inspector Bill Henderson are trying to track her down. After they, too, are incarcerated, Clark turns into Superman to shut down the criminal operation.
When one of the Planet's warehouses catches fire Superman arrives in time to stop it. Later Perry learns that a large payroll he placed in the safe, is not there. So the insurance company refuses to pay, claiming that the fire was deliberately set to cover up the money's disappearance, which Perry knows he didn't do. So he sets out to find out who did. What he or anyone doesn't know is that a couple of guys who call themselves "The Firemen's Friend" because they go to fires and serve coffee and donuts to the firemen, were the ones who stole the money by using a ...
Jimmy has a chance encounter with a barber who seems to have a talent for getting people to do what he wants by making them reveal their true nature. Jimmy decides to try this talent to break up a criminal organization.
Professor Pepperwinkle has developed a way to transmit objects and people through telephone lines. A group of criminals are quick to see the advantage of such a device, and Superman has to stop them before the situation gets out of hand.
A boy hears a plea on the radio for people to donate clothing to flood victims. So he donates his grand father's coat. Later when his grand father learns what he did, he freaks out because, he placed his life savings in the lining. His grand son then goes to the Planet and tells Lois what happened. She decides to print the story hoping someone will help. The two men who picked up the clothing for the drive, who are also crooks upon reading the story sets out to get the coat. Eventually Lois gets a lead so she, Jimmy and the boy set out to get the coat. But when they ...
The Daily Planet gets a strange visitor who turns out to be a rejected citizen from Mars. It is discovered Mr Zero has a talent that attracts the attention of some local gangsters who draw Mr Zero into their gang.
Jimmy accidentally discovers an anti gravity formula, unfortunately he has no idea how it was done due to an accident. This does not stop local criminals and the military taking a deep and urgent interest in the formula.