Winnetou und sein Freund Old Firehand 1966 The Silers gang is chasing Apache Chief Winnetou and his sister Nscho chi, after having killed several Apaches to steal their horses Winnetou and his sister run into a group of trappers led by Old Firehand The trappers help Winnetou and his sister Nscho chi evade the Silers gang Together, they head for the border town of Miramonte In Miramonte, the Mexican Sergeant Mendozza and his men have captured and imprisoned Billy Bob Silers, the young brother of the Silers gang leader The locals fear an attack by Silers gang that wants to free Billy Bob But Sergeant Mendozza refuses to release the bandits brother Also in town are Old Firehands former girlfriend Michele Mercier and her son Jace Mercier When they meet in town, theyre surprised but happy to meet again Old Firehand wants Michele back in his life but shes reluctant to be involved with a trapper whose life style is more wild than settled When Michele accidentally reveals that her son is also Old Firehands son, they all rejoice at the news But the happy moments soon are overshadowed by grimmer news of the impending attack by Silers gang against the town Winnetou and Old Firehand offer their assistance to Sergeant Mendozza in organizing the towns defenses