Opie develops a crush on his teacher, Helen Crump, at the school dance. He spends 74 cents to buy her a gift.

Barney learns that in order to pass the mandatory physical for the deputy's office, he must weigh more and be taller. Andy and Aunt Bee try to stretch him and fatten him up. When he's still two pounds underweight, Andy finds a unique solution to the problem and Barney passes the physical.

The Taylors quickly realize why they haven't invited Bee's sister and her husband Ollie for a visit in over a decade. When Uncle Ollie borrows Andy's squad car to go fishing, it's the final straw.

Ernest T. is back in Mayberry to get his diploma. He is so determined that Andy convinces Helen to allow him to attend class. E.T. is so out of control, she has to slap him across the knuckles to get his attention. Helen's discipline causes Ernest T. to fall in love with Andy's girl. Exasperated, Andy explains to Ernest T. that he loves Helen because she represents his ""motha figer."" Once that's all sorted out, Andy manufactures a diploma that Ernest T. receives in a touching graduation ceremony.

An old beau of Aunt Bee comes to town to court her.

Barney's attempts to train an old mutt (named Blue) as a police dog coincide with a manhunt for an escaped criminal.

Barney and Thelma Lou have an argument. They reconcile quickly, but it leads to other arguments between Andy and Barney, Thelma Lou and Helen, Andy and Helen, and another between Barney and Thelma Lou.

The grocery store clerk (Fred) repeatedly sweeps trash into the street, even after Barney writes him a citation. Fred threatens that if he ever sees Barney out of uniform, he'll pound him. Barney creates excuse after excuse as to why he always wears his uniform, even to the big town dance. Not surprisingly, Andy schemes a plot to get Fred off of Barney's back.

Opie stumbles upon a wallet with 50.00 dollars in it. He turns it into his father's office and waits the 7 day period that he is told he needs to wait before claiming the money as his own. He gets the money but not before the rightful owner has placed an ad in the newspaper that Barney sees.

Andy has the opportunity to perhaps move to Raleigh for another job. Barney is so upset by this that he tries to demonstrate to Andy just how bad Mayberry would be without him. He creates more problems than Mayberry has seen in a year in just one day just to show Andy how much he is needed.

Aunt Bee gets the lead role in the Centennial Pageant, as Lady Mayberry. She is, however, not up to the challenge, and Andy must find a way to tell her.

The Darlings come to Mayberry looking for a boy who could become engaged to Charlene's new baby. Opie becomes their prime target.

Andy and Helen are having a hard time finding quality time together. Barney volunteers to take over for a day, so that they can go to the lake for some "couple time". Barney, unfortunately, is not able to handle most of the tasks he has signed up for, and ends up interrupting them much to their frustration.

Barney acquires some fortunetelling cards and a secret box. The cards promise magical occurrences, and when his promised wish is granted almost immediately, he becomes convinced that the box has mystical powers.

Otis slips in the jail and when he meets up with an opportunistic lawyer, the man convinces him to sue the county. Andy and Barney are very upset by Otis's actions, which in the end prove not to be as mean as first appeared.

A classic. Andy lectures Opie about the importance of informing a potential buyer of the true condition of the item being sold. Meanwhile, Barney decides to dabble in the real estate field, and conjures up a deal where several families are selling their house and buying another house in town. When the Simms's consider buying Andy's house, Opie pipes up about problems that the Taylor house has, which angers Barney, who ends up losing ALL the commission money he WAS going to make from everyone selling their house.

Andy needs someone to answer the phone at the courthouse while he is in Mt. Pilot at a sheriff's conference and Barney is on vacation. Goober volunteers, but Andy isn't sure he's up to it. Grudgingly, Andy agrees after Goober begs. On the day Andy is supposed to leave, Goober fails to show at the courthouse due to being backed up with work at the filling station. Goober brings the car he's working on to the courthouse and works on it outside and, as a result, can't hear the phone ringing off the hook. Andy, late for the conference, threatens to pull Goober off the job until Aunt Bee vouches for him. Goober goes to the courthouse and proceeds to continue work on the car, but brings the car piece by piece into the courthouse while he's working on it! Andy returns from Mt. Pilot to find a completely assembled car on his courthouse floor. To make matters worse, the president of the state Sheriff's Association is coming for a visit! Can Andy save face in time?

Barney tries to use psychology to reform Otis of his drinking habit; trouble is that this eventually drives Otis to "take his business" elsewhere--by going to the jail in Mt. Pilot! Andy and Barney are very upset at having upset Otis and try to fix things.

Barney receives a chain letter, but Andy goads him into throwing it away. Suddenly everything goes wrong for Barney and he is convinced that he will fail at the qualifying shooting range for Deputies and ultimately lose his job.

The boys try to set Goober up with a woman.

Andy considers taking an out-of-town job, and with the election nearing, no one has yet filed to run for Sheriff. After Barney ""throws his hat in the ring"", Andy's out-of-town job deal falls through. Barney spearheads a write-in campaign to get Andy re-elected. When it appears that no one will vote for Barney, he decides to conduct a ""token campaign"" to make the election a real contest.

After Barney finds a suitcase with $250,000 in it, instead of waiting for the FBI, and against Andy's orders, he takes matters into his own hands.

Thieves act out as Hollywood producers and are wanting to rob the Mayberry Bank.

Andy's pretty young cousin comes for a visit, after breaking up with her boyfriend. Aunt Bee asks Andy to be nice to her. Andy invites Gloria to the movies with him and Helen, which makes Helen very jealous. Andy says he'll get her a date for tomorrow night, Helen wants Goober. Andy ends up dancing with Gloria which makes Helen even more jealous. Finally, Andy thinks of a plan and gets Gloria back with Frank.

In going through some of the courthouse paperwork, Barney discovers an open case involving Floyd and Charlie Foley where a fight had broken out. He goes out to try to close the books on this case, but the result is more anger and fighting than ever before.

Opie and his friends decide to start a newspaper. The early issues don't sell well at all (it's little more than a community bulletin board), so to increase sales, the young lads eavesdrop on local conversations and print the gossip in the paper. That starts no end of trouble, and it's up to Andy to set the boys straight.

Aunt Bee begins to feel that she is preventing Andy and Helen from pursuing their relationship, so she conjures up a beau for herself--trouble is that it's the butter and egg man and he's already married.

Andy and Barney arrest the ""fun girls""(see episode #123) for speeding. It turns out to be a big mistake because Helen and Thelma Lou become jealous.

An itinerant peddler comes to town (Don Rickles) and sells Barney, Floyd and Goober some items that prove to be defective. After he disregards Andy's warning about not selling any more things, they put him in jail--but he proves no better at odd jobs than at selling and bungles everything Andy and Barney give him to do.

When Opie brings home a bad mark in arithmetic, Andy, fearing the boy will not get into college, puts too much pressure on him to study, which makes things worse. In the end, Helen tells Andy to ease up and, with the pressure off, Opie brings up his grade

Opie goes to the carnivel and blows all his money on a game to win a birthday gift for Andy: The game, however, is rigged.

Jerry Miller once a carnival banjo player to a Belly Dancer (with a kazoo), then became a deputy to Sheriff Taylor. After Jeopardizing the town he must make a decision, either stay deputy or go back to the carnival.