Description
A middle-aged couple are hiking through the remote wilderness in the Sierra Nevada, when the wife becomes convinced someone is following them. Shortly after, an unseen assailant attacks the husband with a hunting knife, stabbing him to death. The killer then pursues his wife, and slits her throat.
Some time later, two Los Angeles couples— Steve and Sharon, and Charlie and Teddi—plan a camping trip to escape the city. Sharon and Teddi depart before their husbands, who plan to meet them later that evening. While hiking toward their planned camping spot, Sharon and Teddi find themselves in a sudden thunderstorm, and make a camp at the base of a waterfall. Unbeknownst to them, the ghosts of two young children, John and Jennifer, watch them from a nearby cave. Sharon and Teddi are horrified when an apparition of the children's dead mother appears before them, asking where her children are, before disappearing before their eyes. This causes Teddi to panic. Meanwhile, Steve and Charlie, who have been trailing after the women, become lost as night falls.
The ghosts of John and Jennifer visit their father, John Sr.—a cannibalistic hermit who lives in a cave and hunts hikers passing through the woods—and informs him that they saw two young women camping by the river. When John Sr. leaves to pursue the women, Sharon, who has fallen asleep, is awoken by the ghostly children, who warn her that their "daddy is coming." Sharon flees, leaving Teddi alone at the campsite. John arrives at the camp and stalks Teddi before killing her. Sharon manages to elude John by jumping into the river. Steve and Charlie, meanwhile, seek shelter in John's cave during a rainstorm; they are perplexed to find the cave furnished and with a fire-pit roasting a slab of meat. Moments later, they are confronted by the ghosts of John Jr. and Jennifer before their father arrives. Steve and Charlie are baffled when the children vanish, and John informs them they only "come to visit." John allows the men to stay in the cave, and offers them the meat—which, unbeknownst to them, is in fact Teddi's flesh.
John regales Steve and Charlie with the story of how his wife abused their children, John Jr. and Jennifer, and carried on numerous affairs with men. In the morning, Steve and Charlie separate to search for their wives. While climbing over rocks, Steve falls and breaks his leg. Meanwhile, the ghosts of the children awaken Sharon, warning her that their father is coming to hunt her. She heeds their warning, and flees. Later, the children confront Sharon again, and explain to her that they are in fact ghosts, and that their abusive mother still makes attempts to hurt them beyond the grave. They tell her how their father killed their mother and one of her lovers before fleeing with them into the woods. After some time, the children, depressed and in ill health, committed suicide together, which drove their father into a psychotic state.
As night falls, the children attempt to lead Sharon to the injured Steve. Meanwhile, Charlie is confronted by the ghost of the children's mother before John attacks him. The two get into a violent fight, but John manages to kill Charlie. In the morning, Sharon stumbles across John butchering Charlie's corpse. John threatens to kill Sharon, but the ghosts of the children persuade him not to, telling him Sharon is their friend. Sharon eventually stumbles across the injured Steve, who is being pursued by John, but Sharon manages to ambush John, stabbing him to death. The ghosts of the children bid Sharon and Steve farewell. Moments later, their mother's apparition appears, asking where they are, but she vanishes when Sharon tells her they are gone.
