Rusty enjoys visiting the Bluebell Railway, but Rusty's driver is concerned that the line needs an engine, and so Rusty consults Douglas. Douglas mentions that only diesels travel to the Other Railway. That suits Rusty, and the next day he travels to the Other Railway, slipping past the diesels by lying he is an inspection diesel. He finds a tank engine named Stepney hiding on a siding, and convinces him to travel with him to Sodor.
- When Thomas puffs past Rusty he has Edward's whistle sound.
- It is said that Rusty's driver came back to the sheds, but he actually returned to the siding.
- When Rusty says "Right, we'll find one tomorrow" he has dry glue around his face.
- It is said that Rusty's driver agreed to be Stepney's fireman. With that being said, how would Rusty get back? And what's more, his driver was never seen in Rusty's cab, so how could he get to the Other Railway?
- When Rusty and Stepney return Thomas, Edward, Henry and Gordon's whistles are heard.
- The manager on the Bluebell Railway is identical to the one who managed Duke's old line.
- In real life, the Bluebell Railway is a heritage line in England.
- Why would the Skarloey Railway run all the way to the Other Railway?
- Rusty is facing forwards when he travels to the Other Railway, but when he and Stepney leave, he is facing the other way without any explanation of how he turned around.
- When Rusty first arrived on the Other Railway, some chains are seen hanging beside the signal box, but when Rusty says "Oh, what's that?" the chains disappeared.
- The tar wagon seen between 2 diesels disappears in the last shot of the Other Railway.
- On the Other Railway, the Diesels constantly change place.