1967. The Cuban Missile Crisis that led to World War III continues. Use of nuclear weapons resulted in global cooling which changed history and aggravated the struggle for survival. Inspired by the takeover of Europe and Africa the Soviet government decides to start an uprecedented military operation called Ice Crusade. Soviet expeditionary forces march over the Arctic and attack unguarded Amerian cities and towns. Deserted areas of Mexico and icy American megapolises become the new battle-grounds.