When Granny induces Jed, Elly, and Jethro to move into the nostalgic old cabin, Shorty Kellems exploits the now-unoccupied mansion.

Honest John shows up with another scheme to get the Clampett millions for himself. Convincing them he's invented machines to blow the smog away, Jed finds trying to get his money from Mr. Drysdale nearly impossible.