Eccentric Timothy Pimm supports his lifestyle on the Riviera by providing impoverished European noblemen with wealthy wives. His new project matches "Madcap" Mehaffey, an American heiress, with the Grand Duke Henri of Mechlenstein. Julian Soames, pennyless Gran Prix race driver, becomes Pimm's agent in the Mehaffey household. Bumps in the road of true love include Penny, the Mehaffey secretary, and a gang of kidnappers. Good romantic comedy.