It's 1910 in Pownal, Vermont. At 12 Grace and her best friend Arthur must go to work in the mill, helping their mothers work the looms. Together Grace and Arthur write a secret letter to the Child Labor Board about underage children working in the mill. A few weeks later, Lewis Hine, a famous reformer arrives undercover to gather evidence. Grace meets him and appears in some of his photographs, changing her life forever.

While working as an indentured servant for a Jamestown glassmaker in 1621, twelve-year-old Merry uncovers a case of sabotage.