The initial action takes place in the widowed Lady Lundie's house in Scotland. Geoffrey Delamayn has promised marriage to his lover Anne Silvester (governess to Lady Lundie's stepdaughter Blanche), who has incurred the enmity of her employer. The spendthrift Geoffrey is about to be disinherited and wishes to escape from his promise and marry a wealthy wife. Nevertheless, he is obliged to arrange a rendezvous with Anne, in the character of his wife, at an inn, and documents this in an exchange of notes with her. Subsequently, urgent matters force him to send his friend Arnold Brinkworth, Blanche's fiancé, to Anne in his place. To gain access to her, Arnold must ask for "his wife". Although nothing improper passes between them, they appear to the landlady and to Bishopriggs, a waiter, to be man and wife.
