British high society, spy stories and goofy religious cults are all gently mocked in this inventive, stylish satire. Lady Sophia Garfield works at a first-aid post during the so-called 'phoney war' while cherishing an ambition to become a glamorous female spy. Fate ordains that she shall have her chance. When the highly imaginative Sophia discovers a nest of very real German spies in her home, nobody believes her. With her maid murdered and her beloved bulldog held hostage, she sets out alone to gain proof and, with time out for tea at the Ritz, save Britain.