Four campers venture into the wilderness for a relaxing hike, unaware that a deranged mountain man is slaughtering whoever crosses his path. While they tell ghost stories around the campfire and romp in the rolling streams, a number of unfortunate nature lovers are dispatched by the maniac; an ornithologist, a fisherman, a pair of newlyweds, a photographer and even a handicapped man struggling through the woods in his wheelchair. When the killer finally encounters the quartet of youths, he murders Craig (James P. Hayden), the only one with experience in the outdoors. The rest are forced to scatter, hopelessly lost in the forest. Peter (Nick McClelland) and Ingrid (Mary Gail Artz) manage to make it to the safety of a nearby town, and the authorities form a posse to seek out the mysterious murderer. But Peter is overcome with guilt by leaving Joanie (Angie Brown) behind, and he returns to the deadly forest to rescue her and get revenge for the ordeal they've all suffered through.