Tammy begins working as a secretary for wealthy industrialist Mr. Brent, and gets tricked into inviting her river folk relatives to a white-tie affair.
Tammy is scorned by Lavinia Tate as not well born for her son until a gruff man and his sister arrive claiming to be kin of the Tate family.
Determined to pep up her Grandpa, Tammy arranges fake love letters that he mistakes as a burning passion from Lavinia.
Uncle Lucius insists on joining a high-stakes poker game with a man who has vowed to get even with him.
Lavinia Tate is planning on taking the Tarleton property for back taxes until Grandpa finds an ancient document indicating they own half the county, including Lavinia's property.
Lavinia Tate's stock investments are affected by the prophecy of Tammy's Aunt Hannah.
With an assist from Tammy, Dwayne gets a writing assignment, and weekends at the houseboat to absorb the authentic atmosphere.
Tammy's Uncle Cully stirs up trouble when he operates a still while being Mr. Brent's gardener.
When Lavinia Tate learns that Tammy has organized a surprise birthday party for John Brent, she decides to take over the event as hostess.
Grandpa uses Mr. Brent's mansion to pose as a wealthy man in wooing his former fiancée.
Lavinia arranges for a vicious child to wreak havoc on Tammy and Mr. Brent's son Steven to make her daughter Gloria look good.
Mr. Brent and Mr. Whitt mistakes overhearing Grandpa's affection for a puppy as a raging affair.
The stranger Grandpa rescues from the river turns out to be Tammy's wheeler dealer cousin.
Lavinia schemes to buys a priceless antique bowl from Cletus, but it was the food bowl of the Tarletons' mule Enoch who will no longer eat.
Lavinia uses her handsome cousin to make Tammy look like a giddy youngster.
The Tarletons hit one of the oil company's pipes and think they've struck it rich.
Grandpa is fined for leaving his mule on the sidewalk by his rival Amos Potts, the local policeman and judge. Lavinia tries to get out of jury duty.
Through misunderstandings, Mr. Brent and his guest Carl each think the other is to marry Lavinia.
An Indian chief arrives to make Cletus keep a promise and marry his daughter.
Lavinia Tate goes all out to have her ill behaved poodle defeat her rival's dog at obedience trials.
Cletus tries to catch a giant catfish named "Big Luke" to impress Gloria.
To keep his teaching credentials, Dwayne Whitt holds classes on Grandpa's houseboat.
Lavinia invites herself and Gloria along on John Brent's trip to France.
Tammy is chosen to act in a TV commercial, but Lavinia plots to get the assignment for her daughter Gloria.
Uncle Lucius and Grandpa quickly argue upon his return and Mr. Brent and Mr. Whitt struggle to smooth things over.
The Tarletons enter Beulah, a cow that only gives milk when Uncle Lucius sings her favorite song, in a milking contest.
