In the South Seas, a volcano explodes, eventually causing North Pole icebergs to shift. Below the melting polar ice caps, a 200-foot-long praying mantis, trapped in the ice for millions of years, begins to stir. Soon after, the military personnel at Red Eagle One, a military station in northern Canada that monitors information gathered from the Distant Early Warning Line, realize that the men at one of their outposts are not responding to calls. Commanding officer Col. Joe Parkman (Craig Stevens) flies there to investigate, and finds the post destroyed, its men gone, and giant slashes left in the snow outside.