This program dramatizes the history of Teotihuacán through reenactments of the everyday life of its multicultural inhabitants. The chronology of events leading to its eventual rise to dominance as the stronghold of Aztec rule in Central Mexico is traced. Murals found on the Pyramids of the Sun and Moon, and in the temple of the winged serpent god, Quetzalcoatl, are presented as pages of a nonexistent codex, and as the spiritual key to cultures that existed elsewhere in Mesoamerica. The process by which the murals were created is reenacted. The city’s abandonment in the face of barbarian invasions by tribes from the north in AD 700 is traced to its rebirth under the Aztecs. Various concepts of Aztec religious cosmology are examined, including the movement of time, the division of ages into Ocelotl, Ehecatl, Quiyahuitl, and Atl, and the cult of Quetzalcoatl. (Spanish with English subtitles, 34 minutes)