The story of a band of visionaries who rescued some of the little narrow gauge railways that once served Britain's industries. These small railways and the steam engines that ran on them were once the driving force of Britain's mines, quarries, factories and docks.

For more than 100 years steam trains ran Britain, but when steam started to disappear in the 1950s bands of volunteers got together to save some of the tracks and the steam engines that ran on them. Some of these enthusiasts filmed their exploits and the home movies they shot tell the story of how they did it, and how they helped people to reconnect to a world of steam most thought had been lost forever.