Grampa Amos must adjust to a more modern way of life when the McCoy family moves from Smokey Corners, West Virginia to an inherited ranch in the San Fernando Valley of California.

Grampa starts a price war with the Poulson Egg Company, but the real trouble begins when Hassie sets a date with Mr. Poulson's son.

It's a battle of the sexes in the McCoy household over the money in the cookie jar. Grampa and Luke want a new rifle, but Kate needs a new dress for the PTA meeting.

Grampa faces selling his most prized possessions, a flintlock musket handed down through generations of McCoys, when the mortgage on the farm comes due.

Grampa finds out that raising kids isn't easy at his age when he takes over the disciplining of Little Luke and Hassie.

The rest of the family thinks Grampa is taking advantage of a city fellow by selling him five acres of worthless land.

Grampa thinks Kate is running Luke's life and sets out to prove that it isn't fitting for a McCoy to be henpecked.

Grampa refuses to take Flora to the annual fall dance until he hears how good her cooking is.

Grampa and George try to cheat each other in a fishing contest with whoppers that were caught by someone else.

Grampa comes up with a scheme to pass a reading test so he can vote against a female politician.

Grampa and Flora's relationship takes a wrong turn when he overreacts to her old friend and her annoying apple tree.

Grampa's scheme to get the barn painted for free backfires when a casino advertisement is placed on the roof as Kate lobbies to join the church's anti-gambling committee.

Grampa can't tolerate George's insincere method of gaining membership at the local lodge.

Grampa doesn't want to admit that he needs glasses to pass the test for his California driver's license.

Grampa insists Luke takes matters into his own hands when an athletic photographer for a national magazine visits and showers Kate with flattery.

When Mother Purvis comes for a visit, Grampa warns Luke about mother-in-law trouble, but the real trouble is for Kate.

Grampa arranges to trade a date with Flora with for a shy, elderly fellow's hunting dog.

When Frank Goody and his lovely daughter Elvira visit the McCoys from Smokey Corners, Kate burns with jealousy when Luke and Elvira catch up on old times.

Classmates pick on Little Luke about being a hillbilly and Grampa decides to educate the youngsters about their proud heritage.

Luke and Kate think that Grampa should retire and take things easy but Grampa isn't ready to be put out to pasture yet.

When Flora's old flame returns and proposes marriage to her, Grampa decides he better put in a proposal himself.