"Ages ago, a mysterious Cataclysm changed the Earth once and forever. Nowadays, our home planet represents only echoes of its former greatness. Humans struggle to survive in cruel and infertile lands, living in constant threat of being enslaved by powerful, sinister creatures who live behind tall walls of the few only centres of civilization, left on the planet." That's what survivors out there pass down from generation to generation. But how true this story is? Or how true the stories told by creatures from behind the walls are? Who is really the bad one out there?