Motherless and irrepressibly curious, Esme spends her childhood in the Scriptorium, a garden shed in Oxford where her father and a team of lexicographers are gathering words for the very first Oxford English Dictionary. Esme's place is beneath the sorting table, unseen and unheard. One day, she sees a slip containing the word 'bondmaid' flutter to the floor unclaimed. Over time, Esme realises that some words are considered more important than others, and that words and meanings relating to women's experiences often go unrecorded. She begins to collect words for another dictionary: The Dictionary of Lost Words.