Harvey Smithers is opening a new pet shop in Mayberry. Harvey is moving his business from the smaller town of Blue Hill. Mike asks Sam if he can have a dog, but Sam says he's not responsible enough. Mike visits the pet shop and befriends a mutt there. He asks Harvey if he could have a job there after school and on weekends. Harvey wants Mike to get Sam's permission. Mike talks to Aunt Bee and the two of them convince Sam to let Mike have the job. While at work, Mike tries to talk people into buying the mutt. Aunt Bee, Mike and Millie finally get Sam to agree to Mike having a dog. Mike brings the mutt home and names him Fritz. But, they soon learn that he is allergic to the dog. At the pet shop, Aunt Bee embellishes the dog's background and talks Howard into taking Fritz.

Mr. Morelli announces that he will be closing his restaurant due to the lack of customers. He says that everyone is going to Pagano's in Mt. Pilot because they feature a floor show. Howard and Millie offer to help by going to Raleigh to hire an act from Charley Pierce's theatrical agency. They hire a local act known as the Claghorn Brothers. Word spreads and Mr. Morelli is expecting a large crowd. But then the Claghorn Brothers cancel due to a family emergency. Because it's the last minute, Howard can't find another act. Sam used to entertain when he was in the Army and Howard and Millie hope he will help. Sam says that it's been too long since he did that type of entertaining and turns them down. Everyone is now upset with Sam. Sam changes his mind and that night he performs as a song and dance scarecrow.

Goober finally opens his new gas station in Mayberry! Everything goes fine and dandy until Howard discovers some old reltics under the gas station- DINOSAUR BONES! He is eager to recover them, but recovering them would mean tearing parts of the road around the gas station, and Goober won't allow it! Howard wants to make a mueseum with these bones, but wants to get all of them, so he sneaks to the gas station in the middle of the night. And he's caught! Gooober almost presses charges! Howard then opens the first natural science muesum ever in Mayberry, but it's a bust, because most of the bones from the dinosaur are still buried. Seeing how upset Howard is, Goober has the other bones recovered and all is once again well in Mayberry.