2072, Earth faced a serious natural resource crisis. The solution for the crisis was to mine form deeper underground or mine out of the earth. But the most popular option was securing the mining rights of Antarctica. The world has been divided into groups. Russia and China withdraw from the UN and made the New Soviet Reunion. And America rallied their allies and made the UN as their own. Because of these global movements, the world has faced another cold war. And this story is about a special unit called 'The Chimera Unit'