Winnetou's tribe is in dire straits. There is a threat of famine as the all-important buffalo herds are now failing. As the headman's son, young Winnetou wants to prove to his father Intschu-chuna how brave he is and how great a warrior he can be, because he thinks his son still has a lot to learn. To save his tribe, he goes on a dangerous adventure.
Due to the sudden outbreak of a hurricane, a traveling circus, famous for its stunning numbers with horses, calls into the small German estate of Kaltenbach. Soon, Ari realizes that one of the horses of this circus, named Orcan, is in mortal danger. Together with the boy Carlo and their faithful friend, the horse Ostwind, they try to save Orkan from the cruel owner of a traveling circus. However, the shrewd director unravels their audacious plan. And Ostwind's horse is also in trouble. Ari and Carlo have very little time to rectify the situation and save Ostwind.