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.

The annual Harvest Ball is soon and the men are asking each other who they're going to take. Goober would like to take Millie Swanson, but is having a hard time asking her. Emmett writes a letter to Millie for Goober. Meanwhile, Sam would like to ask Millie to the ball as well. Goober asks Sam to rewrite Emmett's letter and Sam finds out it's to Millie. Sam has to run an errand before he can finish Goober's letter. Millie comes to Sam's office and sees the letter. She is excited because she likes Sam. Millie gets the letter in the mail but is disappointed when she sees it's from Goober. Millie's friend Dorothy is there when she reads the letter and says what a nice guy Goober is. Millie shows up to the ball with Goober. Sam is able to get a dance with Millie and Goober can see she would rather be with Sam. Goober tells Sam what he sensed and says it's OK. Goober leaves and runs into Dorothy and senses she likes him. Sam and Millie see Goober and Dorothy walking off arm in arm.

Sam's cousin, Vince, is coming to visit. He used to be a jockey but now he trains horses. The next day Vince arrives with a horse named Gingersnap. Vince says that the horse has not lived up to its potential as a race horse. He's looking to sell the horse to finance a restaurant he wants to partner in and was hoping Sam could find a buyer. Aunt Bee thinks it's a shame to turn Gingersnap into a saddle horse. Emmett tells Sam that Mr. Bowers might be interested in the horse. But Aunt Bee manages to intentionally ruin the deal. She tells Sam her intuition tells her to put the horse in a race. Sam reluctantly agrees. Aunt Bee sets things up and gets the horse into a race at Morgan Downs. The day of the race, Aunt Bee gives the Jockey a pep talk. After the race starts, Gingersnap is in last position. The horse comes from behind to win. When Vince hears the good news, he decides to keep Gingersnap.

The corn crop is coming in and Sam needs to hire someone to help him. Andy suggests using ex-prisoners from the county prison. Sam talks to Aunt Bee and she reluctantly agrees. Andy introduces Sam to Harry Davis and Charley Wilson. The men start picking corn and after a while, Sam gives them some money to run a few errands in his truck. They stop at Goober's gas station. Millie tells them that Goober's not there and they should just help themselves. They stop at Emmett's fix-it shop to pick something up for Sam. Emmett has to leave and he asks the men to watch his store. Meanwhile, Millie drops off a little more than $500 to Aunt Bee. Later, Sam and Aunt Bee find the money and car gone. Harry and Charley go to play cards with Big Louie. Andy and Sam show up and Harry and Charley say they were just trying to win the rest of the money for the pool. Big Louie gives Andy an additional $500 for the pool.

Mike sees in a catalog a silver vase that he would like to get for Aunt Bee's birthday. It seems Mike accidentally ordered a copy machine from Amalgamated Copy Machine Co. There's a 10-day free home trial. Mike decides to go into business with his friend Harold and make copies for people in town. He hopes to make enough money to buy Aunt Bee's gift. Ernie Newhouser, from Amalgamated, shows up at Sam's house. Sam manages to put off Ernie and then goes to talk to Mike. Mike figures he'll fill the order and then mail it back. But he trips over the cord and damages the machine, but it still works. Mike takes the machine to Emmett's, but he can't fix it. He then tries to get a bank loan from Cyrus Tankersley with no luck. Sam finds out about the machine and gets upset. Harold tells Sam that Mike used the machine again so he could buy Aunt Bee's gift. Understanding what Mike went through, Sam tells him he'll keep the machine.