"Uniquely American institution known as the neighborhood bar. Reading left to right are Mr. Anthony O'Toole, proprietor, who waters his drinks like geraniums but who stands foursquare for peace and quiet and for booths for ladies. This is Mr. Joseph J. Callahan, an unregistered bookie, whose entire life is any sporting event with two sides and a set of odds. His idea of a meeting at the summit is any dialogue between a catcher and a pitcher with more than one man on base. And this animated citizen is every anonymous bettor who ever dropped rent money on a horse race, a prize fight, or a floating crap game, and who took out his frustrations and insolvency on any vulnerable fellow barstool companion within arm's and fist's reach. And this is Mr. Luther Dingle, a vacuum-cleaner salesman whose volume of business is roughly that of a valet at a hobo convention. He's a consummate failure in almost everything but is a good listener and has a prominent jaw... And these two unseen gentleman are visitors from outer space. They are about to alter the destiny of Luther Dingle by leaving him a legacy, the kind you can't hardly find no more. In just a moment, a sad-faced perennial punching bag who missed even the caboose of life's gravy train will take a short constitutional into that most unpredictable region that we refer to as the Twilight Zone."
Martians (two heads - one body) give Dingle the strength of three hundred men. Dingle is able to lift statues, tear boulders in half and other acts of strength. He attracts newspapers and TV cameras. As he prepares to lift the bar, the Martians, tired of his foolish behavior, remove his strength. Unable to prove his claims, Dingle is made a laughing stock. As the Martians leave they encounter two Venusians searching for an Earthling to perform an intelligence experiment. The Martians recommend Dingle. The Venusians boost his intelligence three-hundred fold."Exit Mr. Luther Dingle, formerly vacuum-cleaner salesman, strongest man on Earth, and now mental giant. These latter powers will very likely be eliminated before too long, but Mr. Dingle has an appeal to extraterrestrial note-takers as well as to frustrated and insolvent bet-losers. Offhand, I'd say that he was in for a great deal of extremely odd periods, simply because there are so many inhabited planets who send down observers, and also because of course Mr. Dingle lives his life with one foot in his mouth - and the other in the Twilight Zone."