After Granny cuts off the top of Drysdale and Clyburn's (his doctor) hair for some homegrown remedy, Clyburn tries to keep her from ever doctoring again. Meanwhile, the Clampetts are looking forward to the Possum Day parade, which of course isn't celebrated in Beverly Hills, so Drysdale has to figure out how to have one to keep them happy. Granny also gives the men some of her hair growing potion.