This fictional account of early 1900s New England cotton mills is based on the work photographer Lewis Hine's documentation of mill life. A spinning mill may not seem like a playground, but for children whose parents worked in the mills, this unlikely recreation center was all the entertainment available. After school the children ran to the mill where they played in corners away from the growling machinery until their parents were able to take them home. As the children grew older, their time in the mill became permanent when they, too, became mill workers whose working lives were spent weaving and spinning. Ten-year old Grace and her friend Arthur read Red Badge of Courage in school before beginning their work in the mills until French Johnny, the mill supervisor, insists that Arthur work in the mill to help his widowed mother make a living. Although Miss Lesley, the teacher, is reluctant to have one of her best readers leave, she is powerless against the insistence of the mill bosses and gives Arthur the book as a gift. Arthur's departure shows Grace that her time in school is quickly coming to a close. Like the older workers, the ten year olds face danger from whirling machines and exhaustion from unceasing motion as they work to make fabric. The children learn to hide in dark corners when inspectors pay unexpected visits. When Mr. Hines visits the mill, the children's lives become topsy-turvy as they endeavor to have their stories told beyond the boundaries of mill town.