Grandpa and Luke are left with an unproductive hired helper when Pepino apparently inherits a valuable Arizona estate. He warms up his romance with an old girlfriend and brings a flood of salesmen to his doorstep.

A winsome dance instructor tricks Luke into signing up for a 20-year dance course. It is up to Grandpa to rescue him from this embarrassing situation with a devious plan that involves Grandpa's signing up for the course, too. He also saves George, who likewise was tricked into taking the course.

Luke discovers a new romance when he meets an attractive widow, Louise Howard, after her runaway cow tramples the McCoy cornfield. Grandpa connives to promote a romance between Luke and Louise in a most surprising way.

Luke and Louise feel they have a real problem with Greg, who is addicted to telling fantastic stories about imaginable playmates and people. When they return home from a day's outing, after leaving Greg with Pepino, he tells them three escaped convicts had been captured by the police at their home, and they decide it is just another one of his tall tales.

Uncle Rightly McCoy starts courting Flora, hoping she will finance his musical milker. When Luke informs George that Uncle Rightly is only interested in Flora's money, they decide to step in and break up the romance. Their scheme doesn't quite work out as they had planned.

Luke is horrified when Uncle Rightly promotes a corn growing contest at the Grange and is so carried away he volunteers a $500 award to the winner in Grandpa and Luke's name. When Luke learns Uncle Rightly doesn't have the $500, it becomes a major problem of raising the money and saving face with the Grange members, but Rightly solves the problem in an unusual way and comes up with the prize money.