Andy and Helen are finally getting married and Andy is having his Bachelor party. The couple will honeymoon in Florida and Goober will be acting Sheriff. Opie will be on a camping trip and Aunt Bee is planning to leave Mayberry and live with her sister out-of-state. Sam asks Aunt Bee to move onto the farm with him and Mike, but she says her plans are made. It's the day of the wedding and Barney is best man. The happy couple leave for their honeymoon. Something the Reverend says leads Aunt Bee to change her mind about Sam's offer. But farm life might take some getting used to. Meanwhile, Howard reads a postcard from Andy to Goober and Emmett. Aunt Bee decides farm life isn't for her and Sam takes her large luggage out to the car. After speaking to Mike and looking at family pictures, Aunt Bee decides to overcome her fears and stay at the farm. We see Andy singing to Helen and then Barney is there as well.

Howard tells the church committee that the church is in need of funds. The problem is with the annual charity play. Howard believes the problem is that Clara, the producer, hasn't kept up with the times. Clara is not happy when she is told she will be replaced. Because she has a little theater experience, Millie is offered the job to direct "Sleeping Beauty". An old friend of Millie's named Nick comes to town. He offers her a good job in a dance production in Raleigh. Millie wants to stay in Mayberry and turns him down. Clara tells the church committee that Millie used to be a chorus girl. The Reverend suggests replacing Millie, but Sam vouches for her. Sam talks to Millie and she admits to once being a chorus girl. It's the night of the play and the show is running smoothly. The Reverend and Sam think everything will be OK. Then the play ends with Mike singing "A Pretty Girl Is Like a Melody" and the girls do a chorus line fan dance. The audience loved it.

Sam and Howard meet with principal Mr. Adams and Mrs. Corcoran. Mrs. Corcoran is concerned with the rise of minor traffic accidents and violations occurring among the teenagers in Mayberry. She recommends a drivers education course be instituted. Sam recommends Goober. Goober meets with Mr. Adams and accepts the job. One day while backing out of a tight spot in the parking lot, Goober backs into Mr. Adams' beloved car, badly damaging it. Goober admits to Mr. Adams what happened and Mr. Adams can't believe his driving instructor caused the damage. Emmett tells Goober he should quit before he gets fired. Goober lets Howard and Sam know he's quitting. Sam says he'll talk to Mr. Adams first. Mr. Adams tells Sam he's willing to overlook the accident. But, Mrs. Corcoran and some of the other parents want to hold a meeting about the incident. At the meeting, Mrs. Corcoran insists that Goober be replaced.

Ken Marshall, a district sales manager with the ACME Refining Company, is looking for Goober. Ken doesn't like the way Goober runs his station. Profits haven't increased and Goober's appearance doesn't fit with ACME's image. If things don't improve, ACME will take away Goober's franchise. Later, Emmett comes by the station and makes fun of Goober's white uniform and cap. Emmett is just there for a visit and gets annoyed when Goober starts checking things on his car. Goober tells Sam that he's not enjoying his work anymore with all the new rules. Howard tells Sam and Emmett that Goober shut down the station. Howard is worried that without a gas station the town will slowly fall apart. Sam can sense that Goober isn't doing well with this new job. While getting air at the gas station, Sam runs into G.B. Smith. Smith asks Sam why the station shut down and Sam tells him what happened. Turns out Smith is the president of ACME and he wants Goober to run the station the way he used to.

Emmett and Martha's wedding anniversary is coming up. He wants to take her engagement ring to Mt. Pilot to be cleaned. Emmett mentions to Sam, Howard and Goober that a he ran into Wendell, a stockbroker friend of his. Wendell gave Emmett a "sure thing" insider tip on a planned merger between two companies. In Mt. Pilot, Mr. Peterson, the Jeweler, tells Emmett that the ring is now worth $1,500. Emmett notices a $35 synthetic diamond that looks identical to Martha's. Emmett tells Sam and Howard how he pawned Martha's diamond for $1100 and had Wendell buy stock in the company. Emmett learns that the merger didn't go through. He tries to tell Martha what he did, but can't bring himself to do it. And he finds out he'll only get $400 for his stock. Sam, Goober, and Howard bring Emmett and Martha an electric blanket as a gift. Mr. Finletter calls and tells Martha that the ring is worth $35. Emmett finally tells Martha what he did.

Goober receives a letter from his older brother Braden that he is returning to his hometown for a visit. Braden joined the Navy nearly 20 years ago and stayed in California. Goober believes he works in a factory and probably had to save up for this trip. He hopes Braden will be impressed with the fact that he owns his own gas station. In reality, Braden is a successful and important engineer in the government's space program. Goober arranges a dinner party for when Braden arrives. When Braden sees Goobers room, he decides to not tell Goober about his job. At dinner Braden receives an call from his job and the men discover he's an engineer. The waitress says that he also has calls from Washington D.C. and NASA. Sam then remembers reading about Braden and the space program. This makes Goober feel inferior, and something Emmett says makes Goober feel even worse.

A large company wants to buy the rights to Emmett's old invention