A surprise meeting with his former Marine drill instructor causes Aaron to send a gathering howl to his pack mates. In a local café in Klamath Falls, they are told of a bio terrorist organization known as Ash Walkers. It is suspected that the Ash is planning to test a new bio weapon on a survival camp in the wilderness around Crater Lake.
Posing as students of an alternative school and supplied with a list of four suspects, the pack infiltrates Mazama Highlands and begins their investigation. Each of the suspects seems to have something to hide but there is no clear evidence of ill intent.
A sudden storm leaves the remote camp site cut off even further from civilization.
After one of the campers if found dying on the ice, the camp’s generator is destroyed by a bear. This sets the camp on high alert and forces all of the kids into the mess hall where they can be kept warm, fed and safe. More bizarre animal encounters including a pack of wolves attempting to hunt down one of the kids leads to the discovery that the spirit of the injured girl has been “soul riding” animals in her quest for retribution on those who attacked her.
Through clever investigation and after hours of research, the pack discovers that the camp pastor was exposing the kids to a genetically modified virus on behalf of the Ash Walkers.