Horse trainer Steve Tapley is caught between the feuding Martingale and Shattuck families. He sides with young Nancy Martingale and her grandfather Ezra, and the feud is to be resolved by a horse race between the favorites of each family. Unfortunately, the Martingale's horse, Greyboy, only runs well in mud. And it hasn't rained in a long time.
as Steve Tapley
as Nancy Martingale
as Dr. Lee Andrews
as Ezra Martingale
as Arlene Shattuck
as Dolly Breckenridge
as Slick Doherty
as Pole Shattuck
as Pluvius J. Aspinwall, the Rainmaker
as Sheriff
as Wash Jackson
as Greyboy
