To impress a girl, Dobie joins a legit hot rod club, and enlists Zelda's help in building a car from the ground up. But when Zelda finds out about the other girl, will she ruin Dobie's chances at winning?

Mrs. Gillis tries to get Dobie more cultured by dating a French artist's daughter; however, Yvette is more interested in Dobie's rough-edged father.