Thomas is waiting at the station. He sees Becky and her mother. They climbed aboard, and off Thomas went. Thomas knows Becky very well. He sees her riding her pony a lot. He puffs past the Farm she lives. Her horses name is Barnaby. Thomas will not whistle around the farm as not to scare Barnaby. So one day Thomas notices workers in Fox's Field. They were setting up for a pony show. Thomas wants to see the pony show because Becky will be there riding Barnaby.
So when the day arrives Thomas hums as he ran down the track to the show, but as he came around a curve, he saw a horse trailer stopped on the side of the road. Becky stood beside the horse trailer looking worried. They had broken down, Thomas' driver felt sorry for Becky. So when Thomas reached the next station he saw Sir Topham Hatt and a porter. So while Thomas waited the porter spoke to the guard and Percy arrives pushing a special freight car. He carefully coupled it to Clarabel. The guard went to tell Thomas' driver: "Becky was on her way to the Pony Show with Barnaby when her horse trailer broke down.
Sir Topham Hatt asked if Thomas will take Barnaby, Becky, and her mother to the show. Her father will wait for the repair truck." So they load Barnaby into the truck then Thomas took off again. Thomas got Becky to the show on time. Thomas watched before he left. Before he left he wondered if Becky would win a prize and sure enough she did. She gave a yellow ribbon to Thomas, as Barnaby had a red one
- In Australia, it was released with an audio tape of the story narrated by Ron Haddrick.
- The small version of this book does not feature Percy.
- Annie is missing her face.
- On the audiotape, Thomas blows a diesel horn.
- All of the engines are missing their brake pipes throughout the book.