The great engineer, Isambard Kingdom Brunel, was born 200 years ago. Everyone has heard of him; everyone has seen the iconic photograph of him with his stovepipe hat, cigar and muddy boots. He was voted second in the television series, Great Britons. But what was Brunel like and what did he really achieve? Looking through Mary's eyes, four actors transport audiences on a musical journey following the progress of this driven, visionary hero and genius whose colossal engineering feats captured the imagination and guaranteed that his memory will live on. We look at his triumphs and disasters, his railways, his bridges and his ships, but we also see him as a family man at home in London or on his estate in Devon.