This interesting children's tv show from 1976 is based on a genuine Mexican tradition, which may have some basis in historical fact, about the rivalry between the cults of the war god Tezcatlipoca (in the series, called Teshcata) and the culture hero Quetzalcoatl (Quala in the series). Whatever the real history behind the myth is, the show is itself not historically accurate, but nonetheless it is an exciting story of court intrigue. The story has a well-written plot, and fine acting, especially from Patrick Troughton as a villainous high priest. It is well worth checking out as an unusual piece of 1970s tv.