During an unusual bullfight in Buenos Aires, German zoologist Dr Morgenstern from Jueterbogk and his servant Fritze from Stralau on Lake Rummelsburg make the acquaintance of Father Jaguar. The two German adventurers travel through Argentina to unearth the fossilized remains of dynosaurs but are ambushed and imprisoned by enemy Indians and a group of revolutionaries fighting against the government. Famous Father Jaguar rescues the two travellers; Morgenstern and Fritze join his group of yerbateros for the ride through the Gran Chaco. Along the way, two mysterious Peruvians, Anciano and Haukaropora, join them, as they have the same destination—Peru. When the yerbateros clash with the revolutionaries in a bloody skirmish, Father Jaguar comes face to face with his mortal enemy. However, the villainous gambusino escapes. The pursuit leads the yerbateros, as well as Morgenstern and Fritze high into the South American Cordilleras where the mythical gold treasure of the ancient Inca rulers is said to be hidden....More >< Less