Sodor is a place of happiness and joy. A place where living engines work. However things go horribly wrong as a disease spreads throughout the island turning people into monsters hungry for flesh. But you already knew that, didn't you? there are, in theory, infinite universes, so, how about we see a world where the fallen ones survived, while our heroes didn't?

[Literally just "Sodor's Decay" but it takes place on the mainland.] Our protagonist is Class 40, now known as Andy, who spends his days working on the mainland, along with other diesel engines, and a few steam engines who, by law, can't be scrapped yet. All of them unaware that the Decay is about to begin, and it all started with something that looked harmless; Rain.