The Amazing Race returns
Bill and Ben play a trick on a new engine that nearly causes an accident; an engine known for telling jokes can't get anyone to take him seriously when he claims an elephant is blocking the tracks.
As a joke, Bill and Ben send Timothy in search of a truck that doesn't exist; and Samson mistakes Sir Topham Hatt's car for track-side scrap.
Marion sees what she thinks are dinosaurs; and Millie seeks to even the score with Harvey and Samson after they laugh at her for being afraid of a model dinosaur.
Emily's cargo, a huge globe, falls off her flatbed; and Samson ignores advice and takes Gordon's express coaches to the quarry instead of the trucks meant for carrying stone.
Thomas creates an imaginary engine that he blames for a minor accident, but the story gets out of hand; and a rumor spreads that stubborn Toby may get scrapped.
Thomas and James compete to see who can bring fans to the soccer game faster; and Emily doubts her abilities after seeing just how fast Caitlin can go.
The engines help a whale that's stranded on the beach; and Percy's unaware that his wagon is damaged.
Thomas, Annie and Clarabel hope to impress railway inspectors; and Henry fears that the engines will catch the chickenpox from Sir Topham Hatt's sick grandchildren.
A new little diesel boxcab named Philip tries to prove that he's faster than Gordon; and James tries to prove that he's stronger than Philip.
Salty is afraid to travel by boat to the mainland; and best friends Den and Dart worry when they're separated by new jobs.
Older engine Stephen's slowness irks Gordon, but it has a benefit: he spots damage to the suspension bridge. Later, Bertie, Thomas, and Spencer work together to get the Duke and Duchess to an important event at Callan Castle.
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