 Millionaire Harvey Huntington Honeywagon III (Keenan Wynn) tries to prove to his colleague Vivian Clements (Martha Hyer) that his chimp, Clyde, is more intelligent than American teenagers. Meanwhile Dee Dee (Annette Funicello) is torn between Frankie (Frankie Avalon) and British recording star, the Potato Bug (Avalon). Eric Von Zipper (Harvey Lembeck) shows up to aid Harvey s anti-teen campaign. Don Rickles plays Big Drag and Boris Karloff shows up in a gag bit part.