The story is set in an alternative timeline where the world has become split into three superpowers: the Holy Britannian Empire (the Americas; also called Britannia), the Chinese Federation (Asia), and the European Union (Europe and Africa; previously known as the Euro-Universe. Also known as Europa United in Akito the Exiled). The story takes place after the Holy Britannian Empire’s conquest of Japan on August 10, 2010 a.t.b., by means of Britannia’s newest weapon, the “Autonomous Armored Knight”, or “Knightmare Frame”. In turn, Britannia effectively strips Japan and its citizens of all rights and freedoms and renames the country Area 11 with its citizens referred to as Elevens.