Grandpa and Kate are dubious when Luke gets a part-time job as a shoe salesman, but when he loses the job the rest of the McCoys unknowingly come to his aid by going to the store en masse to buy shoes.
When the McCoy's learn that hometown girl Glory is a Hollywood celebrity, Luke fears Kate will be dissatisfied with her life when the McCoy's visit her so when Glory comes to visit, the McCoy men try to paint Kate's life rosier than it is.
After Grandpa tells Little Luke and his friends an exciting (but untrue) story about serving with Teddy Roosevelt in the Spanish-American War, he is invited to appear as a guest of honor at a public Veteran's Day celebration.
Grandpa and Luke convince Kate to enter a local merchant's "Mrs. Homemaker Contest" when they realize that the first prize of $50 in merchandise would almost exactly cover the cost of the new gun they've been admiring.
Grandpa volunteers for a lodge job to shame Luke for refusing it and then finds the task is to assist in answering lodge letters but because he is to vain to announce his illiteracy, creates chaos faking the assignment.
Grandpa and Kate are upset when Luke sells food on credit to a failing restaurant run by a widow and her daughter, but the McCoy patriarch softens his "no credit" stance considerably when he learns that the proprietress is attractive and spunky.
The McCoys are initially honored by a visit from supposedly "pro-farmer" Congressional candidate Jim Slade, but they decide to turn the tables when they learn that he has never been a farmer and is interested mainly in self-aggrandizement.
Granpda urges Pepino to marry his new girlfriend Rosita when he notices improvements in his work ethic, but the McCoys must first help him obtain a dowry by making a favorable impression on the girl's demanding Uncle Lopez.
Grandpa is stubbornly opposed to Hassie's friendship with hot rod enthusiast Eddie Collins and must be convinced that the young man is a serious engineering student and mechanic rather than a "hooligan".
After Amos mocks George's painting, cheap junk dealer Daggett pays twenty dollars for a painting by George at the McCoy farm so Amos encourages George's painting to be his manager unaware that Daggett has actually paid for the frame.