Barney becomes convinced the Mayberry bank is ripe for a robbery and tries to prove his point by staging a fake one. When he discovers a weak spot in the security system, he unknowing relays this information to a couple of actual robbers.

Malcolm Tucker, a business tycoon from Charlotte, has the unfortunate luck of having his car break down in Mayberry on a Sunday. Now he's willing to do just about anything to be on his way, including stealing Gomer's truck. Andy invites the man over for Sunday dinner to try and teach him the importance of relaxation before he does something he'll really regret.

Andy gets a letter from a criminal he had wounded years before and learns the man is coming to Mayberry to see him. Barney becomes convinced the man wants revenge and enlists Gomer and Otis to secretly protect Andy, which ends up wreaking more havoc than any criminal ever could.

Andy suggests to Gomer that he hire a troubled young man named Jimmy to help out at Wally's gas station. But everyone soon suspects Jimmy of being a thief after valuable items start disappearing from the station. Andy believes Jimmy is innocent but must prove it, even when all the evidence is against him.

Barney learns that the car he's spent his life savings on is a lemon, and the little old lady he bought it from may have put one over on him. When Barney and Andy set out to return the car and arrest her, however, they find the hardest part may be just getting there.

Andy is told to keep two big-time bandits in his jail until detectives from Tennessee come to get them. Knowing that the bandit's friends will try to break them out, Barney spots two suspicious men outside the jail and promptly arrests them. As it turns out, they are the detectives from Tennessee, giving the bandit's real friends the opportunity they've been waiting for.

Barney is sent into a reputed "haunted" house to retrieve Opie's baseball and sees things that make even the skeptical Andy wonder if there really are ghosts, until Andy discovers who's really doing the haunting.

A visiting minister preaches the importance of relaxation and inspires Aunt Bee, Andy, and Barney to throw a Sunday afternoon band concert. When it ends up being more work than they imagined, it leaves them wondering if they'll ever have time to relax again.

Andy lets Gomer move in after he loses his job at the gas station and instantly regrets it after Gomer's night habits prove to be more than the Taylors can take. Now Andy must find a way to get Gomer's job back, or never sleep again.

All of Mayberry turns out to welcome a truck carrying gold to Fort Knox as it passes through town. When Barney sneaks a closer look at the loot, he sees that there may not be as much to celebrate as everyone thought.

Thelma Lou's bachelorette cousin is coming to Mayberry for the town dance, and Barney decides to set her up with Gomer. On the big night, they all meet up at Thelma Lou's and everything seems to be going great, until Gomer suddenly disappears.

A minor argument between Barney and Gomer over a traffic ticket erupts into an all-out feud that leads to reckless driving, staged burglaries, and eventually Barney's resignation from the force. Can Andy get the two friends to make up before things really get out of hand?

The day of the town picnic, Barney watches as Andy and Helen go wandering into a cave just before the entrance collapses. He quickly rallies the town to their rescue, not realizing Andy and Helen have already found a way out.

When Gomer replaces Barney in the Mayberry choir, Barney is heartbroken. Gomer hears about this and feigns illness so that Barney can sing on the night of the recital. But when Barney's pride gets in the way, the big performance threatens to become a big disaster.

Andy decides to take a vacation in the mountains and leaves Barney to guard a prisoner the state police have brought in. Inevitably, the prisoner escapes Barney's grasp and flees into the mountains -- the very same mountains Andy is vacationing in.

After Andy extinguishes a small fire that started at the filling station while Gomer was napping, Gomer believes Andy saved his life and makes a pest of himself trying to repay the debt. Andy decides to stage an accident and let Gomer "rescue" him, but it's Gomer that ends up needing the rescuing.

Aunt Bee decides to buy 150 pounds of beef at a discount from a new butcher in town. She stores in in her "discount" freezer, which immediately breaks down. With her beef about to go bad, she learns that the only one in town with a freezer bug enough to save her beef is her original butcher.

When Opie and his friends are scammed into selling a useless skin ointment, Barney and Gomer try to help convince the company their product is more valuable than they think. When the scheme backfires, however, the whole gang learns a lesson in the art of the deal.

Helen and Thelma Lou are horrified to see Andy and Barney escorting a couple of "fun girls" from Mount Pilot the night before the big dance. The boys know they were innocently making sure the "girls' got home alright, but it will take some fancy two-steppin' at the dance to get Helen and Thelma Lou to believe it.

After Barney sees Andy and Helen kissing in a jewelery store, he becomes convinced they are secretly engaged and decides to throw a surprise engagement party, much to the chagrin of the un-engaged Andy and Helen.

After an off-hand comment puts Barney in the doghouse with Thelma Lou, he sees her spending her free time with Gomer instead. Not wanting to hurt his friend, Gomer tries to get her to stop seeing him by falsely professing his love, but ends up engaged to her instead.

While on a camping trip with Opie and his friends, Barney brags to Gomer about his outdoor skills and promptly gets them lost in the woods. When Andy finally does find them, he and Gomer hatch a plan to save Barney the embarrassment and prove to everyone what a mountain man he really is.

Gomer decides to join the Marines, and Andy helps out by secretly convincing the drill instructor that Gomer is the son of a decorated general. The drill instructor takes Gomer under his wing and gets him to pass his inspection with flying colors, only to find out later the truth behind Gomer's lineage. (Pilot episode for the spin-off series "Gomer Pyle, U.S.M.C.")