Three hundred cities have been isolated by unknown civilizations and become doomsday experimental sites.
The only way to leave is to survive the experiment.
Earthquakes, floods, natural disasters.
Zombies, mutations, and virus spread.
Evil spirits, evil spirits, and demons are dancing around.
Le Rong: I have lived through one doomsday experimental site after another.
Ran Guan: And I am always by your side.