The story takes place 40 years after the dimensional bomb. Torn between the Three Nations (Advanced European Union, Human Reform League and Britannia-Union), the world is still unstable and dimensional beasts (Jigenjuu or also known as DAMON) pop up from time to time when there's a dimensional quake. There's two moons and two japans. One of them is occupied by the Britannia-Union and is known as Area 11.