
Andy Taylor is the widower sheriff of the small, sleepy North Carolina town of Mayberry. Andy and son Opie live with Aunt Bee, who takes care of the family. Andy's deputy is his bumbling but neurotically hilarious cousin, Barney Fife. Among Andy's Mayberry friends is the town's resident barber, Floyd.

Barney tries to train Blue, a bloodhound, to track criminals. His plan backfires when he leads Blue to a criminal and the dog starts obeying him instead of Barney.

Barney and Thelma Lou have an argument. When Andy tries to console Barney, it leads to a parade of other arguments among Andy, Barney, Thelma Lou and Helen.

Barney starts wearing his uniform all the time after a tough guy threatens to beat him up if he catches Barney out of uniform.

Andy uses common sense and Barney uses modern technology to solve several burglaries at a filling station.