German-occupied Bosnia and Herzegovina, 1943; under the faithful leadership of Marshal Tito, the Yugoslav Partisans have, for a number of years, put up a staunch fight against the occupying Axis powers. Despite being out-gunned, outmaneuvered and vastly outnumbered, they managed to recuperate in a harsh mountainous region called Durmitor in northern Montenegro. However, their respite is short-lived as the combined foreign and domestic Axis powers begin an encirclement offensive, outnumbering them 6:1. The Partisans have no choice but to fight their way out of the encirclement, then head towards eastern Bosnia. They finally clash with the Axis on the plains of Sutjeska in south-eastern Bosnia.