This epic war saga is based on real events and portrays one of the most celebrated heroic enterprises of the Yugoslav partisans during WWII. During the bitterly cold winter of 1942, the First Partisan Proletarian Brigade is surrounded by strong enemy forces on the Romanija Mountain in Bosnia. Faced with no other option, partisan headquarters decide to make a dangerous move – they will march through the night across Mount Igman near Sarajevo, until they reach the town of Foča which is under their control. Desperately trying to reach liberated territory, Yugoslav partisans of all nationalities engage in the legendary “Igman March” defying horrific weather conditions, chilling winds and temperatures of -40º. Their successful arrival in Foča, however, does not bring an end to the torments of 40 frozen fighters as they now must win the battle against frostbite, gangrene and fever. The long final part of the movie focuses on the recovery of those injured partisans, at least as painful as a real combat. In a series of genuine horror scenes occurring in Foča war hospital partisans are shown enduring superhuman pains during the amputation of frozen body parts without anesthesia or proper equipment.