Jethro decides he wants to go a courtin', so Jed gives him a little education. Jethro develops feelings for an exotic dancer named Chickadee Laverne and brings her home to meet the folks. As usual, neither she or the Clampetts know what the other is really saying.

Jethro thinks he's in love with Chickadee Laverne. She and the Clampetts still have a different idea about what an "engagement" is. Meanwhile, Miss Jane tries to woo Jethro away from Chickadee. As marriage seemingly draws nearer, Jethro discovers a deal-breaking secret about Chickadee: she can't cook.

An unemployed actor named J.D. Clampett and his wife benefit from a paperwork mixup at the bank, becoming $36 million richer. The Clampetts believe that Mr. Drysdale has forsaken them and taken the money. When Miss Jane figures out what has happened, Jake Clampett is arrested. Jed wants Jake freed as he might be kinfolk. Jake tries to pass himself off as a long lost cousin. Gil Perkins appears as the pool man.

Newly discovered "cousin" Jake Clampett soon has everyone but Jed thinking about and dressing for a role in a movie Jake wants to make. Mr. Drysdale hears that Jed is going to finance 10 million for the movie. Miss Jane comes up with a plan to put a stop to it all.

Mr. Drysdale needs investors for his real estate development project, so he enlists the Widow Fenwick, and aims to cement the deal by hitching her to Jed Clampett, who is looking to find a mother for his daughter, Elly May.

Granny says they have no friends in Beverly Hills. Mrs. Schuyler-Potts expels Jethro from her school for being disruptive. Mrs. Drysdale wants to lock up all of Elly's critters. The Clampetts want to go back to the hills. Mr. Drysdale's efforts to prove to the Clampetts that Beverly Hills is really the place for them to be only makes matters worse.

At the mansion, the clan is in need of food, because the hunting in Beverly Hills is horrible. They call a catering company, but get mean-mouthed. At the bank, Drysdale gets a call and learns that he got a kangaroo from a friend and it is at his house. But the kangaroo gets out, and Granny sees it, thinking it is a giant jackrabbit. When she tells Jed, he thinks it is a vision from her jug. She never can seem to catch the creature, and whenever she tells someone, they don't believe her. She finally does, and when Beverly Caterers comes, Granny tells her to cook it, but it escapes from her rope, and runs back to the Drysdale place.

Jethro wants to serve his country as a 007 spy. When he is dissuaded from this, he has to decide what branch of the military to join. Granny gets him to join the Marines because she still wants to catch the whale she saw a year ago.

Elly is disappointed about losing Dash to Miss Jane, so Jed and Drysdale try to fix everything. And Granny is trying to figure out why Dash is going for the plain Miss Jane instead of her gorgeous granddaughter. Another actor, Biff Steel, is set up for Elly, but, once again, he sees Miss Jane and figures she is Miss Clampett.

Inspired by the movie Goldfinger,Jethro wants to be a spy.He tries to spy on Drysdale's rival banker John Cushing and his new secretary.In the meantime,Mr.Drysdale hires Elly May as a secretary-long enough for her to win the Queen of the Banker's Ball beauty contest.Jethro rigged up the truck as a,""spy-car,""and even got a hat made of solid iron.He tried to carry a secret-radio in his shoe-but it kept playing when he stepped on it.He also had an ejector-seat,which Granny made the mistake of getting on.She ended up in the trees.

Leroy Lester, a longtime employee of the Commerce Bank is being forcibly retired to make way for a new computer system. A chance meeting with the Clampetts gives him an idea about dealing with Mr. Drysdale. Leroy goes back to the bank, where Mr. Drysdale's computer has now died. Mr. Drysdale offers Leroy his job back, but Leroy informs Mr. Drysdale that he will be taking an extended vacation and staying with his new friends, the Clampetts.

Granny thinks Mrs.Drysdale is running against her for Possum Queen.Granny and the family put on a rip-snotin' campaign to elect Granny Possum Queen.Mr.Drysdale,in the meantime,is trying to get any city he can to hold a Possum Day parade.

Granny is wondering why her opponent Mrs Drysdale hasn't started her campaign for Possum Queen yet. When Mr Drysdale learns this he immediately starts campaigning for his wife without his wifes knowledge. Granny gets all fired up & the insults are hurled back and forth,When Mrs Drysdale finds out what's going on she goes home to her bed & stays there. Granny thinks she has been too mean to Mrs Drysdale so she pulls out of the race for Possum Queen.