A murder at the Metropolis Munitions plant draws Lois Lane into the thick of a sabotage plot; she ends up inside a torpedo about to be tested. Meanwhile, where is Superman?
Extortionists with a super-powerful bullet-shaped flying rocket car threaten destruction to Metropolis. At first they seem to defeat even Superman, but their capture of Lois Lane spurs him to new efforts...
When Lois is kidnapped by a mad scientist, she is given a demonstration of his energy cannon as he attacks Metropolis. This is the very first cinematic adventure for Superman.
