Robert Danvers (Peter Sellers) is an egotistical television host who seduces woman at every opportunity. When he meets Marion (Goldie Hawn), an American who has just married a British rock performer named Jimmy (Nicky Henson), he tries to charm her. Although Marion is not impressed by Robert's alluring act, she does agree to go on a trip with him to see the wine country in France. When they return, Robert has fallen in love with Marion, but she still has feelings for Jimmy.