1. Trouble for Toby- Toby is working on his branch line but Bulgy has no vegetables and asks Toby to help get more. But Toby has to either help a friend or be late with his passengers...
2. Emily and the Grand Special- Emily gets to take Hiro's place to pull a special train when he breaks down. But Emily's pride comes too soon when she breaks down as well.
3. I Can't Lose- Luke challenges Owen that he can shunt trucks faster than Owen can upload them. But when Luke gets too competitive, will he cause confusion and delay for Owen?
4. Dowager Hatt's Christmas Surprise- The Fat Controller is busy on Christmas Day, so Dowager Hatt gets Thomas and Lady Hatt to help her prepare a party for him, but things don't go as expected!
5. A Good Day for Cranky- Cranky is given time off as ships are delayed by a storm. Cranky tries to catch up on sleeping. But when James asks him to help clear the tracks after an accident, Cranky doesn't want to wake up...
6. The New Station- Peter Sam and Sir Handel are helping to build a new station, but when the tracks are unsafe, Peter Sam has an accident and Sir Handel is left to get the station ready in time by herself.
7. Edward and the Mission Bell- Edward takes a Mission Bell to The Church
8. Killing Duke- Diesel 10 plans to kill Duke
9. James and the Garden- James is to take some seeds to the Duchess of Boxford's garden at the summerhouse but the seeds get mixed up...
10. Peeping Day- Percy loves whistling, but he is teased for peeping and whistling boomingly, so Percy tries to whistle differently, causing trouble.
11. Rocky Racing- Rheneas and the other engines need to take an extra load of slate to the Transfer Yards. Rheneas races Frddie, Mighty Mac and Duke, but will his slate spill on the tracks?
12. Hatt Trouble- The Fat Controller and his family are to go on a picnic trip but are running late to meet Thomas, who is unsure whether to leave without them!
13. Scruff and Gordon- Gordon is to help Scruff at the Waste Dump when Whiff goes to the Steamworks, but Gordon is not pleased...
14. Thomas' Big Friends- Thomas is working at the Zoo by taking some big animals there, such as an elephant, a panda and a bear, but the panda escapes.
15. James and the King of Knapford- James is working with coaches at Knapford. When he inadvertantly blocks Diesel, he is told to clean up faster for the King of Knapford's visit. Is Diesel lying?
16. Stationary Stafford- Stafford wants to do some work, but has none. Stafford grows bored staying still and tries to find work but runs out of electricity on the Main Line!
17. Thomas' Tar- Thomas has a train of tar to deliver to the roads near the level crossing, but a rusty coupling makes him leave half of the tar behind...
18. New Oil- Diesel is fed up of using the same oil to do his work and wants to find a new kind of oil, but when he finds a liquid, he breaks down and is teased by Arry and Bert.
19. Bill and Ben's Pet- At the Quarry, Bill and Ben want a pet. This is unusual and Oliver teases them by giving them a pet rock. Will they care for their pet?
20. Small Busy Engines- The little engines are busy at the Blue Mountain Quarry, and Rusty breaks down. Peter Sam must now load trucks and arrange them too!
21. Madge the Fastest Lorry- Madge is working between the railways and is in a rush. When Thomas needs help, Madge goes too fast and runs out of petrol...
22. Henry's Coal Collection- Henry loves his special coal, but he has to shunt trucks of regular coal. Henry collects some of his own to make a coal museum.
23. Angry Salty!- Salty loses his temper and trys to attack Gordon
24. Neville's Nervous Special- Neville has a special job, but he is shy about it. Thomas helps to encourage him, but Neviile is still nervous when the time comes!
25. Thomas and The White Diesel- Thomas finds a white diesel working in Diesel's place he fells confused The White Diesel is also devious later Thomas finds out that The White Diesel is acually Diesel, Diesel then tells Thomas that he had to be painted white for a change. then Thomas ask Percy how he likes being green and Thomas chosses he wants to be green too so he gets sent To The Steameworks and gets painted green that night the other engines tease him
26. Rocky the Rageful- Thomas is to take Rocky to help clear the lines, but Thomas is too reckless and bumps Rocky several times, making him lose his temper.
- Peter Sam
- Sir Handel
- Mighty Mac
- Arry and Bert
- Bill and Ben
- Donald and Douglas
- Troublesome Trucks
- The Fat Controller
- Lady Hatt
- Dowager Hatt
- Mr Percival
- Jem Cole
- The Duke and Duchess of Boxford
- Mrs Percival
- Stephen Hatt
- Bridget Hatt
- Knapford Stationmaster
- Hiro (does not speak)
- Spencer (does not speak)
- Kevin (does not speak)
- Bertie (does not speak)
- Farmer Trotter (does not speak)
- Salty (cameo)
- Duncan (cameo)
- Den (cameo)
- Dart (cameo)
- Mavis (cameo)
- Hank (cameo)
- Duck (cameo)
- Annie and Clarabel (cameo)
- Henrietta (cameo)
- Trevor (cameo)
- Merrick (cameo)
- The Policeman (cameo)
- The Vicar (cameo)
- Old Bailey (cameo)
- Miss Jenny Packard (mentioned)
- The Teacher (mentioned)
- The Brass Band (cameo)
- The Bird Watcher (cameo)
- Jeremiah Jobling (cameo)
- The Teacher's Husband (cameo)
- The Teacher's Son (cameo)
- Sir Lowham Hatt (cameo)
- Schoolchildren (cameo)
- Alicia Botti (cameo)
- Tom Tipper (not named)