The game takes place in December 2034 when the global warming has taken effect, spreading diseases and natural disasters around the world. The small town of Silver City (Midwest, USA) has been directly affected by a comet that has come crashing down. When Lana regains consciousness, everything around her is just mayhem. Violent outbursts, fury, rage, wreckage and death: the world she knew seems to have torn to Hell. As if struck by a mysterious virus, most of the ones she knew have now become part of a wild horde.