Dr. Milton S. Eisenhower, president of the Johns Hopkins University, opens the show by explaining the 1701 replica model of the universe, the symbol of this oldest TV series on air. Assisted by costumed reenactors, Sidney Painter, professor of history at Johns Hopkins, describes the history of the Middle Ages, the life of knights, and the development of the feudal system. William the Norman spread the feudal system to Anglo-Saxon England where King John disregarded feudal customs. Dr. Painter tells how the Articles of the Barons, based on feudal law, were drafted by Stephen Langdon, Archbishop of Canterbury, granted under duress by John at Runneymeade in 1215, and ultimately revised into the Magna Carta, guaranteeing liberty to freemen and the Church of England and limiting the king's powers.