Amos Wentworth Hogg, Mayor of Bug Tussle, travels to Beverly Hills to visit the Clampetts with hopes of raising money to cover an embezzlement debt. The Clampetts, however, believe he has eyes for Granny.
The Clampketts come across Narda and Yerko, two gypsies, who decide to run a scam on the unsuspecting clan. Involving both a marriage prophecy and and a curse, the crooks see the families 's naivety to their advantage.
Jethro thinks he wants to be a naval frogman but Granny is concerned her tonic has transformed him. Mr. Drysdale, concerned about finances, has Miss Jane distract Jethro with comics causing him to want to fly to the moon.
Granny confuses a movie with a restart of the Civil War, convincing Ellie and Jethro to join the Confederates. Granny wounds the actor playing Grant with Ellie's cookies, taking him to cure him with her "rheumatism" medicine.
Granny competes against Mrs. Drysdale as artists and tells Jed about her uncle the barn painter. Jed and Jethro go to an upscale gallery to buy a painting but are mistaken for gardeners. Bessie the chimp dabbles with a paintbrush.