The funnyman climbs into the driver's cab to take charge of some of the world's most iconic locomotives, learning what it takes to keep them running and meeting the people who keep the railways running. On the Isle of Wight, Paul follows in the footsteps of his tube driver dad by riding up front on the very trains his father would have driven on the Northern Line - now in service on the island. After driving a heritage steam, Paul helps a cow give birth. His journey finishes with a look at how the island was prepared in secret to help with D-Day