In their Pennsylvania town in 1942 twelve-year-old Charlotte and her classmates collect scrap metal for the war effort only to have it disappear from the school basement.
In 1860, eleven-year-old Annie, who lives at the Red Buttes Pony Express station in the Nebraska Territoryasks Pony Express rider Billy Cody to help her find the person responsible for sabotaging her favorite pony Magpie.
