Ben Fogle goes on a journey along the Welsh Borders. He dons chain mail near Oswestry and joins a group re-enacting ancient border skirmishes. After paddling in the River Severn in a coracle and walking a stretch of Offa's Dyke, Ben arrives in Knighton. Here he picks up a ride in a unique car for the next leg of his journey. Finally he arrives in Chepstow, where he climbs to the top of the Severn Bridge.