An electric shock enables Sach to predict numbers, so the Bowery Boys are off to Las Vegas to win enough money at the roulette wheels to let their landlady buy an apartment building. Witnessing his winning streak, some gangsters decide to move in and find out his "system" for beating the odds.

Lucky Jackson arrives in Las Vegas with his car literally in tow ready for the first Grand Prix — once he has the money for an engine. He gets the cash easily enough but mislays it when the pretty pool manageress takes his mind off things. It seems he'll lose both race and girl, problems complicated by rivalry from womanizing fellow racer Elmo Mancini.