After years of war, humanity has finally joined forces as the Earth Federation, developing mobile armors to defend against possible alien attacks. But on the inauguration day of the latest prototypes known as the Bartolls, the demonstration soon turns into a real attack; thus marking the end of the peace that mankind was longing and fighting for. What made the Bartolls go berserk, and why are they abducting people? It will be the ATX team’s job to find out the truth and keep the situation under control.