A wildcat oil outfit is seeking to take over the ranch belonging to Pop Martin and his son Bob and daughter Helen. Bob sends his ex-army pals a "stay-way" message, which brings them on the double. The WW II vets use their jeeps, first for a cattle roundup, and then to round up the gang of crooks, including the crooked family-lawyer Thatcher, brains of the gang.
Father goes to an American Legion convention in Hollywood and the family goes along, visiting a studio a causing havoc on the set.
The Jones family's uncle George enters his trotting horse in the fair grounds race. The family helps raise the entrance fee and care for the horse.