Lois and Clark are assigned to cover the Fair, but after Lois is kidnapped, Superman has to take over, both to rescue her from a wanted criminal and make sure the Fair is covered properly for the paper.; After rounding up a gang of tough thugs, Slam is given a $1000 reward, so he decides that he and Shorty will visit the World's Fair as a part of a well-deserved vacation. Unfortunately for them, their vacation turns sour right away.; Zatara and Tong are ordered to go to inner Mongolia to obtain a fabled jade necklace of the Princess Ti-Lo and get it to the Fair for exhibit.; Wes and one of the executive officers at the Dodds-Bessing Steel Corporation are to meet several government agents at the Fair and turn over to them plans for a new raygun.; Uncle George takes Jim and Jane to many of the Fair's exhibits, giving them helpful information along the way.; Chuck and his college teammates have earned the right to compete in the mile relay at the Fair, but they go through hair-raising adventures even before they arrive!; Scoop must investigate and solve a threat made against a futuristic plane designer NOT to exhibit his new bomber plans at the Fair.; Butch is at the World's Fair and suffers through a series of mis-adventures looking for food.; Hanko is awarded a key to the city and $1000 cash for riding to the Fair all the way from San Francisco on horseback.; Daddy takes Ginger to the Fair, much to his chagrin.