There could be no doubt of the terrifying presence of the Helgrammaw... She had seen them when the Ashfall came. The day of humanity's upheaval. The day when the creatures arrived and her morbid curiosity drove her to see them again with her own eyes, and kill them. "Mad" Madeline Yazzie, a young Ordnance Corps soldier on the front lines of humanity's fight against the Helgrammaw, an unknown species overtaking the Earth, discovers the price of war and the nature of her enemy.