
In this the first episode Clark travels from Byzantine Ravenna to the Celtic Hebrides, from the Norway of the Vikings to Charlemagne's chapel at Aachen, telling his story of the Dark Ages; the six centuries following the collapse of the Roman Empire.
In the second episode Clark tells of the sudden reawakening of European civilisation in the twelfth century . He traces it from its first manifestations in the Abbey of Cluny to its high point, the building of the Chartres cathedral.