The year is 2021, And a large black cloud hit the island of Sodor. Follow Nigel Heartson, As he, Murdoch and Andy/Class 40 return to the island only to find their home different. Based on "Sodor: The Grey Lands" by Mr. Sunken

In 1963, Dieselisation comes to the UK. This story follows the years of Dieselisation on the island of sodor and much more.