Morgan and his friends are on a hunting trip on a remote Canadian island when they are attacked by a swarm of giant wasps. Looking for help, Morgan stumbles across a barn inhabited by an enormous killer chicken. After doing some exploring, they discover the entire island is crawling with animals that have somehow grown to giant size. The most dangerous of all of these, however, are the rats, who are mobilizing to do battle with the human intruders.
Marjoe Gortner
as Morgan
Pamela Franklin
as Lorna
Ralph Meeker
as Bensington
Jon Cypher
as Brian
Ida Lupino
as Mrs. Skinner
John McLiam
as Mr. Skinner
Belinda Balaski
as Rita
Tom Stovall
as Thomas
Chuck Courtney
as Davis
Reg Tunnicliffe
as Ferry Attendant
Kevin Schumm
as Child in a Classroom (uncredited)
