Kouichi, Moritsugu, and Miu are given a mission to assist the retreat of a U.S. Force transportation aircraft and to exterminate the enemy there. It is the first official assignment for Kouichi. Kouichi and Moritsugu team up and take on Masaki Sugawara and Yurianne Faithful of the Katou Organization, who are leading a vast troop of Armas. Meanwhile, Miu, who is backing up the retreat of general troops on Painkiller, is attacked by a new enemy Machina.