Season 4 is the fourth season of Keekre24's Series.
- All For One and One For James: A celebration is coming to Sodor.
- Catherine's Story: Catherine tells Culdee a story.
- Duncan and The Passengers: Duncan and a new engine take some passengers together.
- Sir Handel & The Brakevan: The Spiteful Brakevan causes trouble when Rickety and S.C. Ruffey are being mended.
- Slippery Rails: The rails are slippy on Sodor.
- Arthur Helps Out: Since Arthur doesn't like his job, he decides to help out other engines.
- Spencer's Generous Deed: Spencer gives Murdoch the Duke and Duchess' Coach.
- The Unseen Diesels: Ivo Hugh has an accident.
- Henry's Tunnel: Spamcan and Bowler escape from The Engine Shed and end up crashing at the end.
- Thomas and the Ghost: Thomas gets spooked by a "ghost".
- Rosie's Wild Ride: Rosie has a wild ride down.
- A Mighty Branchline: Mighty Mac get their own branchline after saving Duncan from an accident.
- Best of Friends: Skarloey tells Rheneas what he wants him to do.
- Naughty Engines: Ben is upset when Frank accidentally takes his brake van for Mike's goods train.
- Duke Takes Control: Duke is put in charge when Sir Topham Hatt is away.