Deep beneath the Copper Mountains, where most travelers fear to tread, an ancient treaty crumbles like old parchment. The gnomes have always been makers, their hammers ringing through caverns filled with impossible machines. The elves have always been wanderers, their songs carried on winds that remember everything. For three hundred years, these peoples lived apart, neither crossing into the other’s realm. But when the earth itself begins to crack, spilling darkness from places that should not exist, two unlikely souls must break every rule their ancestors made. What they discover will either save their world or doom it forever.