The year is 2129 in Ashwater, Washington.
Only nobody really knows what the Battle-Brave truly is, even nearly two decades after the event. Most had claimed it to be a bomb, given the mass destruction it had left in its way.
This is why Sergeant Stone, an operative of the Eastside Republic, is sent to infiltrate Ashwater to retrieve it. Knowing that it has been compromised by an enemy called the Prizrak, who had already played a part in the ruination of the old government, Stone must race to the Battle-Brave before it falls into the wrong hands.