Two crooks masquerade as an FBI agent and a professional photographer in a scheme to honor the Mayberry Sheriff's Department for preserving the community's low crime rate -- but they actually have their eye on the town bank.
Both Andy and Barney are offered membership in an exclusive men's club, but Barney manages to alienate the entire group by trying too hard to fit in -- an endeavor that threatens his chances at joining the elite organization.
Andy and Barney are horrified when Aunt Bee decides to enter her prized pickles -- with a taste described as "kerosene cucumbers" -- in a county fair contest, hoping to claim first prize over the competition's perennial winner.
Big Jeff Pruitt (Alan Hale) comes to Mayberry, determined to find a suitable wife. Andy and Barney are more than happy to help him with his search -- until Pruitt announces his choice: Barney's girlfriend, Thelma Lou!
The men of Mayberry become infatuated with Ellen Brown (Barbara Eden), a curvaceous manicurist who sets up shop in Floyd's barbershop. But the women of Mayberry are less than enthusiastic about the situation.
As part of the Founder's Day festivities, the residents of Mayberry decide to give a key to the city to the first visitor entering the town. Unfortunately, that visitor is Sheldon Davis, a highly skilled pickpocket and petty thief.
With the town jail full, Andy reluctantly decides to have the town drunk, Otis Campbell, incarcerated in Andy's own home. But when Aunt Bee takes charge as the "warden," Otis is soon howling to be locked up in the real jail!
Aunt Bee invents an imaginary beau so that Andy can be free to concentrate on finding a wife for himself. But when it comes time to produce her boyfriend in person, Bee must scramble to find an actual contender.
Floyd's dreams of expanding his haircutting business seem to be coming true when semi-retired barber Bill Medwin offer to come on board. But what Floyd doesn't realize is that his new barber is actually a bookie.
Can the town drunk masquerade as a respected Mayberry deputy? That's the plan when Otis Campbell receives a letter from his brother, who is planning to visit the town and observe his brother's law-enforcement talents.