The construction of the Great Western Railroad creates heavy conflict between the railway company and neighboring Indian tribes. Worse, criminal gang leader Santer sets his eyes on a gold mine located on holy Indian land and influences the construction supervisor to re-rout the planned railroad straight through Apache land. Old Shatterhand, who works as a measurement technician, discovers the evil plan and searches contact with the Apaches in an effort to avert war.
After breaking the enemy's rings, a partisan batch is left only with three wounded and two healthy fighters. Through his binoculars, the German captain Anders monitors the surviving soldiers who are walking through the fog in an effort to reach their brigade. Anders quietly starts a manhunt on wounded while anticipating their physical and mental exhaustion.
A Serbian artillery battery of the Combined Division makes a forced march to the Cer Mountain in western Serbia to meet Austro-Hungarian troops, who have invaded the country by crossing over the Drina River. A chronicle of the Battle of Cer; a landmark battle of World War I and the first Allied victory over the Central Powers.
