In 1914, when the war draws the young men of Britain away to fight, it is the women who must keep the nation running. Two of those women are Peggy and Maude, twin sisters who work in the bindery at Oxford University Press in Jericho. Peggy is intelligent, ambitious and dreams of studying at Oxford University, but for most of her life she has been told her job is to bind the books, not read them. Maude, meanwhile, wants nothing more than what she has. She is extraordinary but vulnerable. Peggy needs to watch over her.