The shameful pillar of history has long nailed Japan's name - the desperation of depleted resources drove those in power and the plutocrats to open the forbidden abyss. Under dereliction of duty, the brutal biological experiments created a curse that could destroy the world. This unnatural creation spurted out like the breath of hell, instantly eating away the light and tearing apart the old order. When the corpses turned into mountains, China became the only remaining island. Outside the wall, deadly pollution, aberrant ecology, wandering man-eating aliens, and unknown existences distorted by the curse itself have jointly woven the "Bad Land", a restricted area of life. Those who set foot will be alienated or annihilated, and no one will be spared.