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.

Mayberry gets an invitation to join a sister city program by the United States government. The city council approves of the idea and is then to arrange for a delegation from their Mexican sister city, Puerto Bello, to visit Mayberry. Mayor Juan Nunez and Pablo Santos arrive in town. Juan presents the town with a very expensive looking goblet. Sam has the men over for what he thought would be a simple lunch. But Aunt Bee has a fancy meal served with Goober as the butler. While the men are outside, Sam tells Aunt Bee that she shouldn't be putting on airs the way she is. Aunt Bee says they must come from a very rich town and they should be treated that way. Sam overhears the men talking about how impressed they are with Mayberry. Sam also hears that they spent half the town treasury to buy the goblet. He tells Aunt Bee what he heard. That night at the ball, Aunt Bee finds a gracious way to return the goblet and she presents her sign to Mayor Nunez.

Millie visits a dress shop in Mt. Pilot that is run by her friend Emma Whittaker. Millie tries on a new line of dresses and is introduced to their designer, Miss Rogers. Miss Rogers likes Millie's freshness and asks her to come to New York for a month to model the line for fashion magazines. Millie is excited and accepts the offer. It's been a week and Mr. Felton, the mailman, finally brings a card from Millie. She's been busy and has met a sculptor. Another week passes with no word from Millie. Sam goes to see Millie and Thornton Avery, the photographer, is not happy that Sam interrupted the photo shoot. Sam doesn't really get to talk to Millie as she is busy. Then the two go to a party that night. Sam finally gets a quiet moment with Millie. She says that while she's had fun, she can't wait to get back home.

Howard is made very jumpy at Sam and his camping trip, due to Millie having bad dreams about the trip.