'I don't believe I'd go there if I was you. What's the use of it?' 'Because it's there, ' said Lewis. 'It's there, all right. If you git in there and can't get out, you're goin' to wish it wudn't. ' A group of middle-aged friends in search of the wilderness experience that has been missing from their big-city lives go canoeing one weekend. They pack all the usual survival gear - plus a banjo and a bow and arrow - and head off. Unskilled and naive, they paddle downstream, enjoying the exercise and the gorgeous scenery. But something is in the air. There are small signs at first: their canoes hit sudden rapids, the river seems polluted with litter and bird feathers, and during the night their tent is punctured by the talons of a hunting owl. Then, the following day, after mooring their canoes by the woods, they are approached by two sinister men. One is carrying a shotgun and the other a knife...