While Barney is on vacation in Raleigh, Andy needs to find someone to fill as a temporary deputy. When Andy himself has to go to a sheriff safety conference for a few days. Nobody is available, so he is stuck with Goober. Goober doesn't take the job seriously (still working at the filling station). It gets so bad that Goober begins to work on cars at the sheriff's office and even ends up completely dismantling a car right inside the courthouse.
Barney gets a chain letter that predicts bad luck it he doesn't make copies and send them to friends. To prove to Andy that he's not superstitious, he doesn't send any. A constant stream of back luck is the result. Things look bad when he has a marksmanship test coming up, which he has to pass in order to keep his job.
When Andy and Barney get tired of Goober tagging along on their dates, they decide to try teaching him how to act around women and then get him to ask a girl on a date. It proves to be quite a project.
After Andy is profiled in a national sheriff's magazine as the 'Sheriff Without A Gun', a television production team comes to town to research a possible TV show about Mayberry's sheriff department. Andy suspects something's up when they spend a lot of time checking out the bank.
When Helen tells Andy Opie isn't doing too well in math, he's pretty relaxed about it. She recommends that Opie should do a bit more homework and he agrees. Barney, however, thinks Andy's attitude is completely off base. Barney starts talking about how Opie may not get into college and the like and gets Aunt Bee all worried. Soon, Andy is just as stressed and he tells Opie to buckle down and cut out the play time. Helen soon reports to him that since they last spoke of Opie, he is actually doing much worse and not only in math. Andy can't understand since he's been ...
Malcolm Merriweather returns to Mayberry, announcing that he plans to live there permanently. Andy gives him the job of school crossing guard after firing Ernest T. Bass from the job for throwing rocks at cars. Ernest T. challenges Malcolm to a fight which he accepts, even though he can't fight.
After Helen gets upset about a publicity picture of Andy and a pretty actress from the movie, Andy tries to get back at Helen by going on a date with the actress. When Helen calls to apologize, Opie tells her about the date.
Opie and his new friend Tommy are having fun with the new boy's miniature walkie-talkies. They listen in on conversations and the like but Tommy has a sense of humor that not everyone appreciates. When Goober adopts a stray dog, they hide one of the walkie-talkies in the animal's collar and soon the gullible mechanic thinks he has a talking dog. Goober soon makes a fool of himself and the boys think it's quite funny. Andy tries to impress upon them that humiliating people is not funny and teaches Tommy a lesson in what it feels like to be the butt of someone's ...
Aunt Bee takes a part-time job at a printing shop that has just opened in town. When Andy notices, among other things, that they print business cards with green ink, he figures out just what they're in the business of printing!
When the old church organ heaves its last note, Warren finds an ad for a used one placed by a local farmer, and Andy gets pledges from local businessmen to supplement what's in the church fund to pay for it. When it's time to collect on the pledges, all Andy gets are excuses. But the farmer can't afford to budge on the price. The church organist herself, Clara, relies on her intuition to supply a solution.