The game takes place in 2034, where global warming has taken effect, spreading disease and natural disasters around the world. The small town of Silver City in Midwest, USA has been directly affected by a comet that has recent collided with the Earth. When Lana regains consciousness, everything around her is just mayhem. Violent outbursts, fury, rage, wreckage and death: the world she knew seems to have become a living Hell. As if struck by a mysterious virus, most of those she knew have now become part of a wild horde. Despite her wounds, she knows she must run as far as possible to escape this nightmare; the viral process has begun inside her but she refuses to become one of them. The presence of Amy, an enigmatic eight-year-old autistic girl with curious powers, who seems defenceless, will force her to make choices that will change both their lives.