Sam was experimenting growing string beans, but his crop turned out very poorly. Sam consults with his friend Ralph Barton, but Ralph has no answers. He then talks to Harry at the lawn and garden shop in town, but he's no help. Meanwhile, Millie is growing string beans in her backyard garden. Sam later sees Millie's beans and asks her what she did to get them to grow so well. Turns out Millie did nothing special but water them. Sam gets irritated when Millie sees a bucket of his tiny shriveled up beans. That night Sam and Millie are double dating with Goober and Marilyn. Sam becomes annoyed when Goober keeps complimenting Millie's beans. Mike talks to Millie about her fight with Sam and her beans. Later, Mike tells Sam that Millie talks to her beans. Ralph sees Sam talking to his beans and tells Sam something that makes him feel better. Sam apologizes to Millie and brings her some of his tomato crop. After he leaves, she compares his tomatoes to hers and hers are bigger.

While tossing a football with Sam at Goober's service station, Emmett falls into the grease pit. The guys take Emmett to the Doctor and learn he broke his arm. He'll have to wear a cast for 5-6 weeks. Emmett is worried about having to close his shop. Not wanting to leave the town without a fix-it shop, Emmett puts an add in the paper for help. A scientifically-minded high school boy named Ernie applies for the job. Emmett at first turns him down, but then hires him. Emmett soon learns that Ernie is very skilled at fixing things. Word spreads around town about how talented Ernie is and now everyone is bringing in things to be fixed by him. A depressed Emmett tells Sam that he's closing up shop and leaving Mayberry. He says his shop just isn't the same anymore. Sam tells Emmett that even he has to try and keep up with new things and methods. After Emmett leaves, Sam calls the high school. Emmett winds up joining Mr. Desmond's science class at the school.