The Clampetts are concerned Mr. Drysdale is worrying too much about their money. When Jethro misunderstands and believes Britain's queen is broke, the family heads to their English castle to help her out.
Heading to England Jethro smuggles Ellie's turkey buzzard on the plane upsetting Mr. Drysdale and a fellow passenger. After landing they try to meet with the Queen to give her their 80 million dollars. Their butler Faversham tries to clear things up.
The Clampetts fly to London to give the Queen the deed to Canada they purchased. Waiting for an appointment with the Queen they stay at Clampett castle, where Granny is thinks they are at war with a neighboring castle.
In an attempt to get the Clampetts to move back to California, Mr. Drysdale tells Granny about the spirit of Lady Clementine. Her husband was murdered in the Clampett castle. Lady Clementine's ghost is going to return to seek revenge on the person who killed her husband; her little old grandmother.
Mr. Drysdale follows the Clampetts and Miss Jane to Hooterville where they are spending Christmas. He takes Ellie's bear Fairchild with him and gets himself thrown in jail in a little town. Sam Drucker shows up to help.
Mr. Drysdale is sick and Dr. Granny springs into action with a chimp as a nurse. But Ellie's bear Fairchild has taken a liking to granny's "flu" remedy. During this Mrs, Drysdale tries to impress society Mrs. Van Ransonhoff.
Jethro's new plan is to become a big time talent agent with his first action is hiring beautiful Babs and Bunny. Cousin Roy, told his has musical gifts, arrives but Jethro refuses to accept him as a client which upsets the other Clampetts.
Jethro is evicted because his 50 cent allowance won't cover the rent. The other Clampetts take over the space with Granny will cut hair or pull teeth. Jed will sharpen tools and whittle something. Ellie is the pretty receptionist.
Jethro meets Mrs. Drysdale's guru and decides he wants to be one also. Granny thinks it's all nonsense but when she tries to put a stop to it the followers find her common sense inspiring and make her the head guru.
The Drysdales now jog so the banker can get the account of Jason Detweiler, head of a running club. The Clampetts don't understand the concept, leading to misunderstandings then Ellie and Jethro become enthusiastic,