Synopsis by Hal Erickson
Young Frankie (Tyler McDuff) idolizes his uncle Duke (Roy Barcroft), a criminal who has been put behind bars thanks to Superman (George Reeves). Convincing Frankie that he was framed, Duke persuades the boy to cook up a scheme that will discredit not only Superman but also his reporter contact Clark Kent--unaware, of course, that Clark and Superman are one and the same. To this end, Frankie chums around with cub reporter Jimmy Olsen (Jack Larson), hoping to turn Jimmy against Clark. But Jimmy is not easily fooled, and he decides to prove to Frankie that Duke is up to no good. Inevitably, both Jimmy and Frankie are kidnapped, leaving Superman to set things right yet once more!