In a world divided by war, two opposing civilizations, Lunars and Solars, are at war. The Lunars fight against a technologically superior civilization, and without magic and with few resources, they resort to brutality and strategy. Azael, a Lunar, is at the center of the conflict as he assumes a new role in the war and, together with his allies, he faces battles and discovers dark secrets and begins to question everything he has seen and whether the war is not just against the Solars, if there is something bigger at stake, and the truth may be more dangerous than any enemy.