This one starts out quite interesting. Tony Roberts plays a Canadian naval officer on an ice breaker clearing a channel near the arctic. When the men on his ship finish their duty and head for home, they're astounded to see that the ice has completely melted in an area that's normally frozen over. Other airborne observations confirm that other parts of the area are experiencing similar warming.

Returning to his base to discuss the matters with a superior officer, the men are interrupted by an eskimo leader who, along with his fellow villagers, aren't happy. They're standing by a pile of seals who normally might be food if they'd been hunted, but who have died mysteriously..they're convinced the military had something to do with this. In the meantime, one of the naval officers, a pilot, is trying to locate a certain ice floe and succeeds in finally doing so, but sees something else apparently quite extraordinary...they lose radio contact with him immediately thereafter.

Convinced he's gone, the officers later get autopsy results on one of the seals. The officers suspect radiation poisoning or burns, but the autopsy indicates the seals died of exposure to intense heat. Based on that and the other information they've learned, Roberts' character and his superior believe they are faced with an ultrafast and deadly melting of the polar ice cap, and that some type of incredible, unknown force is involved... 