A team of researchers is attacked by Graboids in the Canadian Arctic, leaving only their remains. Dr. Rita Sims and Valerie Mckee recruit Burt Gummer, a market owner, to investigate. They soon discover that DARPA may be developing biochemical weapons using the Graboids.

Tremors: A Cold Day in Hell
A father-son duo battles a fresh wave of deadly Graboids at a remote Canadian research station to save the father's life, which is rapidly being destroyed by the poisonous effects.