When Sunset Shimmer steals Twilight's crown to the Crystal Mirror, it's Twilight and Spike's job to stop Sunset with a mind of crudeness and dishonesty. They entered the world of Sodor, one where Twilight is now a Steam Engine and Spike is a little diesel boxcab. Learning how to act like a Steam Engine, a Blue Tank Engine was focusing on his branch-line, when he meets a purple Steam Engine and a little Diesel Boxcab, thus, helping Twilight and Spike to learn more about Sodor and finding their way to stop Sunset Shimmer.

A Thomas & Friends x MLP Crossover that takes elements of Equestria Girls Movie and many Thomas elements from the CGI era.

Set after Season 3 of MLP: FiM and T&F: Sodor's Lost Treasure.