The world is teetering on the brink of the apocalypse. A group of survivors have found themselves isolated from the remnants of society and under siege living in a subterranean bunker. They dare not abandon the crumbling complex as it is the only security from the enemy that awaits them outside. Living in a constant state of fear, they face the fact that food supplies and ammunitions are running out, giving them no choice but to leave the secure area. Together they start their quest for survival, facing an enemy that is stronger then expected, with a power that can destroy all of mankind.