Michael Portillo embarks on an adventure from the coalfields of south Wales to the southernmost tip of Cornwall. His first stop is Whitland in Carmarthenshire, where in the early 20th century, thrill-seekers gathered on Pendine Sands to indulge their need for speed. In Llanelli, Michael retraces the fateful events of a national rail strike in 1911 and is stirred by the sound of a male voice choir as they sing the town's unofficial anthem. At Loughor, he discovers a passionate preacher, who led a religious revival which gripped Edwardian Wales and had profound implications for the nation's established Church. In a suburban semi-detached house in the 'sprawling, crawling town of Swansea', Michael discovers the restored home of the poet Dylan Thomas, and the tiny bedroom in which he wrote two-thirds of his published work.

Michael Portillo discovers the birthplace of British aviation in Bristol and prepares an Airbus 380 for a smooth landing at Filton. In Newport, he uncovers the heroism of a young boy who rescued a workman from a dock disaster, in which many died. Michael discovers the home of a forward-thinking Edwardian family at Eagle House in Batheaston. Frieda Roberts remembers the suffragettes who campaigned for votes for women in the early 20th century and found refuge at the house after their release from prison. And in Clevedon, Michael goes to the movies in a perfectly preserved cinema dating from 1912 and hears about the first film to be shown there.