In their first cinematic adventure, Apache chief Winnetou and mountain man Old Shatterhand pursue a gang of murderous outlaws who will stop at nothing to find the legendary treasure of Silver Lake.
When violent conflict breaks out between greedy railroaders and a tribe of Mescalero Apaches, only two men, destined to be blood brothers, can prevent all-out war: chief's son Winnetou and German engineer Old Shatterhand.
Forester, a ruthless oil baron, wants to create a war between the native American tribes and the white men. Old Shatterhand, Winnetou and their sidekick Castlepool try to prevent this.
Outlaws disguised as Indians commit crimes against settlers but Winnetou and Old Surehand are determined to unmask the bandits and keep the peace between settlers and Indians.