After a series of long adventures, Sunny and her friends figure that they've got things all under control.

All of this is challenged when a trio of precision racers and car enthusiasts arrive in Falmouth. Determined to prove their modern speed machines to be superior to anything on rails, they challenge the five to a race from Penzance to London Paddingon-an epic race of over 360 miles.

With only a few crews, one clapped out Light Pacific, and several hours of harsh conditions awaiting them, can the heroes of Falmouth defend the honour of steam against the onslaught of modern technology?

Loosely based on the Race to the North episode of Top Gear, and the first of several specials within the Mainland Timeline.