Earth began space colonization by establishing the Next Colonies. The colonies later rebelled and formed the Next Government. The rebellion escalated into war, and the multi‑purpose Metal Vehicles (MVs) were repurposed for combat. At the same time, Terra, an Earth Rebellion faction, intensified its attacks against Earth. Now a mysterious MV‑like entity, S.A.C. (referred to as “S”), is roaming the system, and Next seeks it to secure victory. Terra’s psychic leader, Hal, has been sensing “S” and is eager to uncover its power. The destinies of these three factions rest in the hands of a group of outlaws who inhabit the abandoned Next 7 colony, though none yet know this.