Cast into exile, she must return to free her people. Banished from her underground home by Betony, the queen of the Cornish piskeys, young Ivy sets out to forge a new life for herself in the world above. But a deadly threat lingers in the mine, and Ivy cannot bear to see her people suffer while Betony refuses to believe. Somehow she must convince the queen to let them go. Her mission only becomes more complicated when Ivy starts to dream of the ancient...