The depletion of the earth's ozone layer causes animals above the altitude of 5000 feet to run amok, which is very unfortunate for a group of hikers who get dropped off up there by helicopter just before the quarantine is announced.
Christopher George
as Steve Buckner
Leslie Nielsen
as Paul Jenson
Lynda Day George
as Terry Marsh
Richard Jaeckel
as Prof. Taylor MacGregor
Michael Ansara
as Daniel Santee
Ruth Roman
as Mrs. Shirley Goodwyn
Jon Cedar
as Frank Young
Paul Mantee
as Roy Moore
Walter Barnes
as Ranger Tucker
Andrew Stevens
as Bob Denning
Susan Backlinie
as Mandy Young
Kathleen Bracken
as Beth Hughes
