Growing up in Bearhead Holler, deep in Kentucky's Appalachian Mountains, Amy Fay Jones had always been poor. There was a sketchy myth in her family about a long-lost fortune, but the only person who insisted the story was true was Amy's senile grandmother. When the grandmother, overcome with poverty and despair, stopped talking and eating, Amy decided she had to find out the truth about her history. She spun sixty years back in time and morphed into her grandmother as a 12-year-old girl. She learned about the coal—and the diamonds—discovered deep beneath the family's craggy land. And she ran into the evil speculators trying to bilk her great-grandparents out of the mine. Can Amy use her present-day knowledge to outwit the villains and change her family's fate?