Air date: July 28th, 1995 (UK), November 11th, 1996 (US)
Rusty is concerned that Duncan will derail at a dodgy section of line due to his "rock 'n' roll", but Duncan refuses to take advice from a "smelly Diesel", and matters are only made worse when James backs Duncan up and tells him of the time he supposedly sent Diesel packing. Duncan is full of admiration, and starts to "rock 'n' roll", causing him to derail. Rusty is furious and refuses to help, until Skarloey reminds him of the passengers. Rusty then helps Duncan get back on the line and, that night, the two engines become good friends.
Tropes featured in the episode:
- Aesop Amnesia: Duncan didn't learn his lesson about "Rock and Roll". So he does it again. This time, he derails.
- Blatant Lies: James told Duncan about how he had sent Diesel packing, even though he never did anything because he was among the engines who believed Diesel's lies about Duck calling them names to the trucks. Also, it was The Fat Controller who had found out Diesel's lies and sent him away. Of course, James was too conceited to tell the truth.
- Call-Back: James' recalling of Diesel causing trouble with the engines and also being sent away in disgrace.
- Drives Like Crazy: Duncan. Unfortunately, he happened to be on a bad part of the rail.
- Fantastic Racism: Duncan didn't want to take advice from a "smelly diesel" like Rusty.
- Fire-Forged Friends: Duncan and Rusty.
- Jerkass: Duncan. He warmed up to Rusty in the end, however.
- Refuse to Rescue the Disliked: Rusty was called to help Duncan back on the rails due to his rudeness. He eventually does after Skarloey calls him out on it.
- What the Hell, Hero?: Skarloey calls out Rusty for refusing to help Duncan, reminding him of the passengers.