Symin, Ranger Scout and trusted academy advisor, leads our young heroes on an expedition to the desert city Horde, intent on unraveling the mysterious origins of Cinder. Along the way, the rangers will also uncover the secret truth of the flames, causing them to question who they are, and what they might become. What other secrets have been hidden from their world? Why was Cinder created, and what became of the world which came before it? Treghan, Corilai, Marni and Fletcher will finally learn the shocking truth.