An outbreak erupts in Forks, Washington as men and women suddenly begin to turn into the terrifying creature known as Bigfoot. The town quickly becomes a killing zone as people are being slaughtered and more and more of its citizens are becoming monsters. Only high school student Brooke Hernson knows the cause of these transformations, but how can she fight an ancient evil when she has to do everything possible just to survive as the Bigfoot go house to house hunting down every last person? Elsewhere, on Orcas Island in Puget Sound, Anne Baker has a terrible secret. She was a former scientist on Morey Island, where the Bigfoot Experiments and the kidnap of Chad Gamin had taken place, but she was cleared of all wrongdoing. The laboratories were burned down and now years later, no one knows about her own experiments. She wonders if they survived the fires. The only way to know for sure is for her to return to Morey Island and pray that her worst nightmares do not become true.