Plot: Presented by leading theologian Robert Beckford, Dark Ages explores how warring pagan tribes in Britain became one nation under a single religion - Christianity. In this extraordinary story, which begins with the fall of the Roman Empire 400 years after the birth of Jesus, we chart the precarious survival of Christianity in the Celtic West and Ireland following a struggle for souls between three different religious traditions: the warrior pagan religion of the Anglo-Saxons, Celtic Christianity and a resurgent Roman Christianity, which arrived with St Augustine in 597