A group of college students gets lost in a storm during their snowmobiling trip and takes shelter in an abandoned sanitarium which, unbeknown to them, is home to three deformed cannibals. Adventure,Horror In the introduction, we see how three demented maniacs take over a hospital and kill the doctors. Years later, a bunch of teenagers skiing in the area look for shelter in a snow storm and arrive at that hospital. On the next morning, they discover they are not alone. The 3 same old cannibals chase them to cook them for breakfast... Part 4 of the series works well as a prequel, it is not necessary to know the other movies. What I liked was that the teenagers are not the usual stupid bunch, running and screaming. They actually develop a strategy to chase the enemies and try to prepare a trap for them. There are also a couple of stupid moments, for example the guy who wants to help a strangled person – by pulling hard at her feet so the noose tightens. OMG. But altogether it's a watchable sequel. The cinematography goes up one notch in quality compared to part 2 and 3, obviously the hospital offers more visual possibilities than the woods, and they used them. The movie was not shot at the studio, but inside a real 'lost' building which adds to its creepiness. I voted 8/4/6/7/5/4 for the 6 movies.