"In this vibrant new historical novel, the acclaimed author of The Plum Tree and What She Left Behind explores one young woman's determination to put an end to child labor in a Pennsylvania mining town... As a child, Emma Malloy left isolated Coal River, Pennsylvania, vowing never to return. Now, orphaned and penniless at nineteen, she accepts a train ticket from her aunt and uncle and travels back to the rough-hewn community. Treated like a servant...

Rita and Rosie Stevens are only nine and five years old when their widowed mother marries a violent bully called Jimmy Randall and has a baby boy by him. Under pressure from her new husband, she is persuaded to send the girls to an orphanage, not knowing that the papers she has signed will entitle them to do what they like with the children. And it is not long before the powers that be decide to send a consignment of orphans to their sister institution...

When Caroline Lang goes undercover at the Dinsmore Chocolate Factory, driven to reveal the horrors of child labor within, she crosses paths with the factory's owner, who has his own, altruistic point of view about employing children.

Describes the conditions and treatment that drove workers, including many children, to various strikes, from the mill workers strikes in 1828 and 1836 and the coal strikes at the turn of the century to the work of Mother Jones on behalf of child workers.