1893, city of Mostar, Herzegovina, Austro-Hungarian Empire. Stoyan, a poor country boy comes to town and starts to work for a rich but crooked and greedy store owner.

Evil Bash-Chelik is terrorizing people, but only the magic sword can harm him. A young hero goes on the dangerous quest to find that sword.

Bad weather, farmers who do not allow the dumping of their estate, and people who are willing to sabotage for ideological reasons, disrupt the building of hydro-power on the Neretva river. Upon completion of construction, the benefits of electricity assures people of the necessity of progress.