 Fred prepares for a big ball game between the Slate quarry and another company. He feels so confident since he heard some "big league" scouts might be around for the game. However, all s not going well for Fred as he is unable to complete the game either on offense or defense. A young employee, Roger Marble, takes over his place...and his uniform and help the team win. Two major league scouts from the Boulder City Giants, Leo Ferocious and Casey Stangel noticed him, but mistaken for Fred. He gets the offer, but his over-inflated ego irates both families, especially when they try to make him think it is Roger Marble who deserves to be a big leaguer...