The future is over.
Civilization on Earth has collapsed. Oligarchs have established a new order in manmade space colonies at the Earth-Moon LaGrange points.
A group of powerful colonies form the Systems Overterrestrial Coalition to re-civilize the earth, but grounders view the colonists as hostile meddlers. The Coalition counters the rising violence with giant manned robots called combat frames.
The independent L3 colonies denounce the war on Earth. In response, Coalition Security Director Sanzen takes L3 leader Josef Friedlander’s wife and daughter hostage. Amid the tense standoff, Friedlander’s son Sieg launches an unsanctioned rescue mission to L1’s Byzantium colony.