Walker Creek is a small town with a dark secret: a hidden society of parasitic aliens taking over human hosts and turning them into shapeshifting creatures known as skinwalkers or the Hosted, with a secret human rebellion fighting for decades to stop them. After acquiring VHS tapes with evidence of the infestation from his recently-deceased father George, Daniel Shephard realizes that he has to find the truth behind his hometown, discover how to stop the Hosted, and figure out how his father was involved.