In a dying world beneath a fractured sun, Kael survives by scavenging the ruins of forgotten cities to buy medicine for the only person he has left. But after a terrifying encounter with a monstrous entity known as an Eidolon, Kael awakens a forbidden power tied to an ancient cosmic force — the Eclipse. Hunted by horrors, haunted by grief, and dragged into a war beyond human understanding, Kael must decide whether this cursed power will save the world… or consume what remains of it.