Newlyweds Webster and Jackie Frye spend their honeymoon in a sinister old country house. Before long, they are besieged by a gang of crooks, searching for a fortune in diamonds. With the help of chauffeur Harmony Jones, the honeymooners attempt to outsmart the villains.

Charlie Yuckapuck is mistaken by Klavashian intelligence agents for a defecting cosmonaut named Yascha Nudnik. Charlie works in a diner with his friends Annie and Magda. When Magda inherits a bookstore, Charlie and Annie go to work for her, unaware that the bookstore is crawling with spies seeking to recover secrets stolen by the missing Nudnik.