When President Harry Truman appoints Washingtonian socialite widow Mrs. Sally Adams ambassador to the small, fictitious European nation of Lichtenburg, she takes everyone by surprise. What Sally lacks in policy knowledge, she makes up for in charm. Everyone is taken with Sally's practical, down-home manner -- especially the nation's handsome Prime Minister. Meanwhile, Sally's secretary, Kenneth Gibson, falls in love Princess Maria. Irving Berlin's sparkling political satire, Call Me Madam, is based on the real-life Washington DC hostess and Democratic Party fundraiser Perle Mesta, who was appointed the Ambassador to Luxembourg in 1949.