Flynn is the Sodor Island Fire Engine and Victor is working on Flynn’s wheels so that he can roll on the road as well as on tracks. He sets out on the road, wobbling. Rocky tells Flynn that Sir Topham Hatt’s shed is on fire. Flynn goes on the tracks, even though the road is faster, because he doesn’t want to be a “big red wobble on wheels.” On the way to the shed, Flynn meets Butch and Bertie. They both need his help but Flynn chuffs on because he feels too silly to roll on the road. Flynn is late because he should have used the road! The crowd around the shed cheers for Flynn as he puts out the fire.He returns to help Butch and Bertie. Flynn isn’t a “big red wobble on wheels”! He’s the hero of the day! One day, Gordon is too snooty to notice some freight cars in front of him and crashes into them. Gordon’s buffer crashes onto the track and he loses his buffer. Den and Dart offer to help repair Gordon, but he insists that Diesels cannot fix Steamies, and he huffs away without his buffer.Mavis and Salty tell Gordon that he needs a buffer. Reluctantly, Gordon chuffs back to Den and Dart and they fix him with a yellow and black diesel buffer. Gordon is very embarrassed by it. Thomas makes Gordon realize that he should be happy that he is fixed and can be a Really Useful Engine! Gordon says sorry and thank you to Den and Dart because they are all – Diesels or Steamies – Really Useful Engines!