This book, written in 1907, is Benson's dystopic vision of a near future world in which religion has, by and large, been rejected or simply fallen by the wayside. The Catholic Church has retreated to Italy and Ireland, while the majority of the rest of the world is either Humanistic or Pantheistic. There is a 'one world' government, and euthanasia is widely available. The plot follows the tale of a priest, Percy Franklin, who becomes Pope Silvester III, and a mysterious man named Julian Felsenburgh, who is identical in looks to the priest and who becomes "Lord of the World".