This film essentially starts with Apache chief "Winnetou" (Pierre Brice) riding on horseback to meet a Native American tribal chief of the Assiniboine about joining comprehensive peace talks with America. Along the way, he encounters a young Assiniboine maiden named "Ribanna" (Karin Dor) being attacked by a bear and rushes in to save her. Grateful for his help, she introduces herself and reveals that she is the daughter of the Assiniboine chief. His bravery strengthens his cause, and he convinces the Assiniboine chief to collaborate with several rival Native American tribes to negotiate peace with the American government. Additionally, while he's there, he frees three American soldiers held captive by the Assiniboine, including one named "Lieutenant Robert Merrill" (Terence Hill), who just so happens to be the son of the officer in charge of a nearby Army garrison. However, there is a wealthy oil baron named "Bud Forrester" (Anthony Steel) who has been causing chaos among the Native Americans to claim their lands--and he'll stop at nothing to sabotage all peace efforts. Rather than reveal more, I'll just say that I enjoyed this particular installment of the Winnetou series a bit more than the three films that came before it, especially due to the romantic drama involving Winnetou, Ribanna, and Lieutenant Merrill. Additionally, just like its three predecessors, it also features beautiful scenery and background music. In any case, I enjoyed this film for the most part, and I've rated it accordingly. Slightly above average.