As the Second World War spreads across the globe, even the harsh Arctic region becomes a battleground. In the North Atlantic, Allied convoys head for Murmansk, carrying supplies to aid Russia in its fight against Germany There, they battle the Luftwaffe and German U-Boats. In the Pacific, Japan seizes the frigid island of Attu as another stepping stone, but American forces quickly respond with their own invasion to secure the area. Both sides endure harsh conditions in the fight for the Aleutian Islands.