You are born in the future where unknown space life has started a war against earth and now rules the planet and every human being is now in a futuristic prison with other criminal alien doing free labor, they even make prisoners fight to the death for fun. Earth has become a prison world but from being introduced to other elements from space humanity grew powers (a female alien guard is saying) okay you are inmate 100096 we're gonna make you fight inmate 70087 come with me