In a dystopian future where Earth is controlled by corporate syndicates, colonists fleeing their rule discover powerful technology on a distant planet—left behind by an extinct alien race. The corporation DN reverse-engineers it to build Virtuaroids: piloted battle robots. During testing, the facility's central computer becomes self-aware, activates the Sun Cannon, and begins moving to destroy civilization. DN deploys their top pilots in Virtuaroids to shut it down before it fires.