Four hundred years ago, an apocalyptic Greatstorm shattered civilization and ushered in a new age of darkness. Now, devastating Storms strike every night, ripping open the heavens and summoning feral, alien creatures known as ghoblins. In the desert, in one of the Sanctuary Cities, a young slave-warrior feels the Storm pulsing within him. To the far north, in the icy regions of the Glaciers, the son of a mapmaker travels alone, searching for purpose after ghoblins take everything he loves. Humanity teeters on the brink of extinction. Ghoblins armies assemble as the Storms grow in fury, and in the darkness there are whispers of a new Greatstorm rising... Prophecy calls it the Worldstorm.