In the former industrial town of Metzburgh, a meteorite carrying an Extraterrestrials in fiction known as Ombis lands. Mark Lowe, a teenage resident of the town, and his ex-girlfriend Lucy Greenheart become caught in the crossfire of the virus, which turns humans into disfigured mutants, and Nemesis, an alien from the same planet the virus originated, who was sent to Earth to contain the spread of the infection.