Haunted by their father's mysterious disappearance on the very same grounds twenty years before, Canadians Dave and Mark Barrows lead the expedition in hopes of confronting their past and conquering their demons. One by one, as members of their crew go missing, they begin to discover that they are not alone in the woods and that the horror surrounding them bears a past of its own. Nameless, a ruthless killer is watching-studying their every move and waiting for the perfect opportunity to strike. Trapped in the woods, a transformation takes place within the hearts and souls of each member of the group as they become entangled in a web of murder, suspicion, and betrayal. It is only after they uncover a dark secret that they begin to understand not only their enemy, but also the much larger implications and happenings deep in the forest of Lake Marlow.