What is the deep? where did it come from? We once could sing to the great trees and they would sway to our song. Thirty years of war, and a hundred years of poison air have made the great forest a dangerous place to live. To make matters worse, the deep is rising from the roots, threatening to submerge whole cities. Follow Welesh, a deep-diver and ranger, on a journey through a world unlike any other in this hand-drawn epic inspired by BLAME, Nausicaa, and Morrowind.