In an apocalyptic background that is eroded by cosmic-level terror (Cthulhu-style) forces and is on the verge of destruction, the only hope for mankind seems to be hidden in those forgotten ancient tombs belonging to prehistoric super-civilizations. The protagonist is not seeking gold and silver treasures, but through "grave robbing" to discover ancient knowledge and technology that can combat the apocalyptic disaster. This is not only a battle for survival, but also a battle of mind and madness.