Martha decides to go into business for herself and open a boutique. Emmett assumes it won't last long but in the first week she does twice as much business as he does. Now he has to deal his wife being a bigger success than he is.
While on a date a woman tells Howard he's too stuffy and could benefit from sensitivity training. Howard decides to go to an encounter group and afterwards he is so different no one knows what to make of him.
Sam's cousin, Alice Cooper, is now out of the Army and comes for a visit. She decides to move in and take the place of the departed Aunt Bee but finds it hard to relate to the people in Mayberry.
When it's time for the Church pageant, Mike is reluctant to play a lamb. Sam tells him he has to be willing to do his part even if it's personally embarrassing. And then Millie asks Sam to play the role of the dancing Pan.
Millie is voted "best dressed" woman in Mayberry, so she goes all out on a new wardrobe; only to discover in the end that her own style is best after all.
Howard invites his nephew Spud to come visit him in Mayberry, not realizing that he's a hippie, and out of place with the locals. Spud wants to live the life of Thoreau and Howard decides to let him try it.
Mr. Fremont lets Goober house sit for him and have free use of his Rolls Royce. When Goober goes to a fancy restaurant for lunch he meets pretty Diane, and her social climbing mother, and is afraid to admit he's not what they think he is.
When Sam needs his house painted his friends get together and offer to paint it for free. Sam reluctantly agrees and then worries that he will get exactly what he "paid" for.
Sam's cousin, Alice, finds a harp at an antique shop and buys it. She has plans to learn how to play it for her own enjoyment but her music teacher wants her to prepare for a recital.
Sam arranges for an old friend from NASA to show Howard some Moon rocks as long as he keeps it a secret. But it's never easy to keep a secret in Mayberry, especially when Goober is involved.
With Sam expecting a city planner to keep him busy for a week, Millie decides to go visit out of town. When the planner turns out to be an attractive woman, everyone worries about them spending so much time together.