―A.C. 197―・Peace had returned to the people. In the history of the Earth Sphere that followed, the existence of weapons known as Mobile Suits, including the Gundam, would never appear again. However, as long as humanity exists, war will never truly disappear. That is why an organization known as the "Hikeshi" (The Firefighters) is necessary. Heero and the members of "PREVENTER-7" launch a new operation to extinguish the flames that threaten total peace…!