An infant boy from a race of supermen on another planet, Clark Kent, is rocketed to earth and reared by a kindly couple in opening scenes of the Superman drama, "Superman on Earth." As a young man he applies for a job on the Daily Planet, and, in order to prove himself, scoops other reporters and rescues an airport ground crewman dangling from a dirigible guy rope. Thus he begins his dual life as Clark Kent, reporter, and Superman, Man of Steel.

Jimmy Olsen, cub reporter on the Daily Planet, visits his aunt on an island off the coast of Maine and stumbles on smugglers operating in a supposedly deserted lighthouse. His life threatened, Jimmy calls on Clark Kent, who, disguised as Superman, saves Jimmy from drowning and rounds up the criminals in "The Haunted Lighthouse."

Perplexed by the baffling mystery of armored car robberies in which the entire car disappears, Clark Kent, Lois Lane and Jimmy Olsen solve the case. They learn how a ventriloquist's dummy is used to transmit confidential car routes at the climax of the Superman television drama, "The Talkative Dummy."

Two elderly men, one of them a suave gentleman sporting a cane, are discovered buying and then destroying small plaster statuettes from art shops all over Metropolis. Following the men, Lois Lane is captured and almost killed before Clark Kent, as Superman, rescues her and solves the puzzling mystery in the Superman television drama entitled, "The Mystery of the Broken Statues."

A secret formula, representing the only known defense against atomic warfare, is stolen, and Clark Kent as Superman, strange visitor from another planet, enlists the aid of Pepi, a trained monkey, to recover the formula and capture the international criminals in the adventure thriller, "The Monkey Mystery."

Phyllis Coates in the role of Lois Lane, reporter on the Daily Planet, is vacationing on the Canadian border when she is captured by a pair of desperate gunmen. To free herself, she involves Jimmy Olsen (Jack Larson) who is in turn seized. Superman (George Reeves) appears on the scene in time to rescue them and solve the mystery in the exciting Superman adventure, "A Night of Terror."