Sidney is a very forgetful diesel engine who decides to make up a song to help him remember a very important job.

Philip tries to befriend Toby the Tram Engine, thinking he is a diesel boxcab like himself. Unfortunately, young Philip and old Toby don't seem to like the same things.

Henry is given the job of pulling the express. Meanwhile, Gordon is reassigned to Henry's goods trains and he doesn't like it one bit.

Rough and tough Diesel shows that he's really a big softie when it comes to fluffy little ducklings.

Bradford is a very strict brakevan who abides by all the railway rules and regulations. As a result, the engines of Sodor find him very difficult to work with.

Samson takes as many trucks as he can of an important stone train to save time getting to the docks.

Daisy manipulates Ryan to get him to do her extra work, as well as his own.

James has to learn to change his showy attitude.

Skiff is helping prepare for a storm, but he himself is blown away down the track.

Daisy boasts about transporting an entertainers group.

Percy, with some help from Harold , deliver letters to the North Pole.

Annie and Clarabel learn that two wrongs don't make a right.

Thomas questions his friendship with Max and Monty after they repeatedly pull reckless and dangerous stunts.

Connor gets damaged when travelling at high speed and decides that he must go more slowly from now on.

James has to take the Mayor to Callan Castle, but is mortified when he finds a tiny scratch on his paintwork.

Everyone on Sodor struggles in the hot weather, Belle and Flynn were putting out fires while the Fat Controller was forced to wear a safari hat to keep himself cool. Also known as "Buckled Tracks & Bumpy Cars".

Bert is splashed by some visitors to the railway and is determined to get back at them.

After teasing Duck about his whistle, Mike boasts about his own.

Rex thinks pulling wool trains is an easy job, but he quickly discovers otherwise.

Henry is accidentally given paint that glows in the dark.

Thomas, Percy and Toby are frightened by a sound from under the bridge.

A different new engine arrives to the island and the other engines think he will replace them.

Hugo wishes he could fly like an airship that has been soaring over Sodor.

Judy and Jerome get their chance to be really useful again.

Skiff and the Fat Controller go on a wild adventure around Arlesburgh Harbour in search of a mermaid.

Marion discovers what she thinks is a talking Christmas tree, but it turns out to be Glynn the Coffeepot Engine who is restored and sent to work at Ulfstead Castle in time for the Earl's Christmas Party.

Stephen becomes jealous of all the attention received by Glynn at the castle.