The anime/game is set in the near future of 2032, which has seen Tokyo split into two by a massive earthquake. Corporations rule the country, production-line humanoid robots named "boomers" are being used by villains to commit crimes, and the beleaguered police are too under-budgeted and incompetent to handle it all. The all-female mercenary team the Knight Sabers, who use powerful exosuits called "Hard Suits", are the city's best defense.