Esme is born into a world of words. Motherless and irrepressibly curious, she spends her childhood in the 'Scriptorium', a garden shed in Oxford where her father and a team of dedicated lexicographers are collecting words for the very first Oxford English Dictionary. Esme's place is beneath the sorting table, unseen and unheard. One day a slip of paper containing the word 'bondmaid' flutters to the floor. Esme rescues the slip and stashes it in an old wooden case that belongs to her friend, Lizzie, a young servant in the big house. Esme begins to collect other words from the Scriptorium that are misplaced, discarded or have been neglected by the dictionary men. They help her make sense of the world.