A mission no one has ever returned from. A young man who'll stop at nothing to survive. And a mysterious world that may swallow him whole. Tavarian, a withdrawn boy on the planet Isodonia, longs to know what lies beneath the clouds at the bottom of the mountain. He gets his wish when he is found to be immune to the toxic atmosphere on the surface. Sent to bring back lightning-filled stones that can help power his struggling community, he vows to be the first to return. Haunted by abandoned towns and whispering shadows, Tavarian is about to learn why no one has made it back. Will he find the stones and return home? Or is he doomed to follow in the footsteps of those lost before him?