Beneath the underground city of Troqua twisting tunnels known as the Deeps stretch for hundreds of miles. The Deeps' topography is traitorous, its inhabitants twisted and hardened by the same fantastical powers that petrify and kill all who dare enter. And yet, the Deeps are never vacant of fools. Because buried in its dark corners, sequestered inside its seams of hard rock are magical gemstones. Skye is a prospector who dreams of one day reaching the surface and seeing the sky. For months he'd been trying to join a team of professional explorers to increase his chances of finding wealth. And when he finally managed to secure a meeting with a skilled crew, he woke up late for his first interview...