Bird has grown up disavowing his mother and her poems; he doesn’t know her work or what happened to her, and he knows he shouldn’t wonder. But when he receives a mysterious letter containing only a cryptic drawing, he is pulled into a quest to find her. His journey will take him back to the many folktales she poured into his head as a child, through the ranks of an underground network of librarians, into the lives of the children who have been taken, and finally to New York City, where a new act of defiance may be the beginning of much-needed change.