A retired Texas Ranger and three aged pals help to clean up a town run by a crooked mayor, a drunken judge and a trigger-happy sheriff.

After being away for awhile, Andy Taylor returns home to Mayberry to visit Opie, now an expectant father. While there he ends up helping Barney Fife mount a campaign for sheriff.

An aging doctor in a small town decides to pack up his little black bag, but when a young doctor assumes his practice, the older practitioner can't resist butting in with comic results.