Granny cuts off the top of Drysdale and Dr. Roy Clyburn's hair for some homegrown remedy. Drysdale would like to tell Granny that she's not aloud to practice medicine in Beverly Hills, but he's afraid to. He sends Miss Jane to tell Granny. Miss Jane comes by the mansion and sees the family celebrating and dancing. Jed tells her it's Possum Day and Jane pretends to know what that is. The Clampetts are looking forward to the Possum Day parade, which of course isn't celebrated in Beverly Hills. Clyburn tells Drysdale he better speak to Granny. The family is about to drive to the bank to watch the parade when Drysdale and Jane drive up. Drysdale tries to tell Granny she can't practice medicine anymore, but all she can talk about is giving him a hair growing medicine. Miss Jane and Drysdale try to set up a parade for the Clampetts, but are having no luck. Granny puts some of her hair medicine on Clyburn's head but he takes it off. Granny wants to head back to the hills after Clyburn tells her to stop her doctoring. Jed finds out there's no Possum Day celebration. They now definitely want to leave and take their money out of the bank. Clyburn sees that Granny's medicine worked as Drysdale now has a full head of hair. Clyburn begs Granny to give him the hair medicine again and Drysdale tells the Clampetts there will be a Possum Day Parade. The next day everyone gets to march in the parade.