A college coed attends a class on the occult and ends up possessed by a 17th-century witch who seduces the girl's lover (who is also teaching the course) and sends her on a murderous rampage to get revenge on the descendant of the man who persecuted her in this taut horror movie.

Five children crawl from the wreckage of a deadly van accident in a snowy canyon. The juvenile survivors (including teen heartthrob Leif Garrett) seek shelter at a secluded mountaintop winter home occupied by a rich businessman (Gene Evans) and his friends (including Sorrell Booke, Boss Hogg from TV's Dukes Of Hazzard and Shelly Morrison of Will & Grace). Soon, strange mishaps occur and the group is stranded without electricity and telephones. One by one, the adults begin to fell prey to a series of shocking and violent deaths! By the time the few surviving adults suspect the demented delinquents it may be too late!