The book is about three families in England at the beginning of the twentieth century. The three families represent different gradations of the Edwardian middle class: the Wilcoxes, who are rich capitalists with a fortune made in the Colonies; the half-German Schlegel siblings (Margaret, Tibby, and Helen), who represent the intellectual bourgeoisie and have a lot in common with the real-life Bloomsbury Group; and the Basts, a couple who are struggling members of the lower-middle class. The Schlegel sisters try to help the poor Basts and try to make the Wilcoxes less prejudiced. The motto of the book is "Only connect..."