The scale of World War II increases when the United States joins the war. In the fourth episode of the Silent Arctic Wars series, allied commando forces strike the coast of Norway. Spy bases are established in the border regions and the Norwegian resistance forces are activated. Landing in Norway is also planned. Hitler gets worried and directs more resources to the north. Soviet prisoners of war are pouring into construction sites in Norway and Finland. The weather war and the convoy war are intensifying. In Finland, the Germans are fighting a positional war and the gaps in the military leadership are falling apart. The position of the Germans in the north begins to crumble.

The Germans start a thousands of kilometers long withdrawal operation on the eve of the arctic winter. The Soviet Union begins its major offensive in the north, while the Finns press the Germans to the huge Sturmbock defense line. In the last episode of the Silenced Arctic Wars series, we follow how the Germans retreat with scorched earth tactics and at the same time try to complete the defensive positions at Lyngen in Norway. Hitler's megalomaniacal construction projects drive prisoners of war to death and cannibalism. World War II ends, leaving behind a devastated Arctic.