Jethro wants to go back to Dr. Twombly to get his health certificate. Miss Jane tries to explain to Jethro that Twombly is a psychiatrist. Meanwhile, Granny says it's going to rain and Miss Jane tells her the paper says it won't. Jethro and Twombly have another confusing conversation. Jethro finally gets his bill of health from Twombly so he can graduate the fifth grade. Twombly tells Drysdale that he's very interested in Granny's home remedies for various ailments. Pearl tells Granny she kind of likes Twombly. Drysdale brings Twombly to the Clampetts' just as Granny shows Pearl how to use a love potion, so everyone thinks Twombly's interest in Granny is love. Granny tries to break the spell by blowing a special powder on Twombly. Pearl gets all dressed up and Granny makes herself look like a witch. Twombly still wants to talk to Granny so everyone thinks the spell isn't broken. Pearl tries to impress Twombly with her yodeling, but that doesn't work. Twombly wants to take Granny for a drive in his convertible, but Granny says it's going to rain. Twombly tells Granny it isn't supposed to rain. They step outside and it starts to rain.