Diesel returns to Sodor and this time he wants to prove that diesels are stronger than steam engines.

When Percy gets stuck at a signal box, Harold takes the mail, which leads to trouble.

A double feature of Thomas Christmas stories begins with the engines organizing a very special Christmas party for a kind old woman. Later, Thomas gets stuck in a snowdrift while delivering the Christmas tree to the annual Christmas party.

Thomas and James must work together to get the fireworks to Knapford Station before the display is cancelled.

Sir Topham Hart goes on holiday, with disastrous results.

Percy is curious why engines are forbidden to pass the "Danger" sign at the harbor, but soon wishes he had not.

Percy plays a trick on Thomas for calling him silly.

Diesel returns to help Duck and Percy out at the harbor, but causes more trouble than ever before.

Duncan loses his whistle and his replacement is very musical indeed.

Henry pulls a special train called "The Flying Kipper" which later leads to a nasty accident.

Thomas tells the story of how Falcon derailed and how Duke managed to save him.

'Arry and Bert play tricks on Percy and James at the smelters yard.

Henry refuses to come out of a tunnel for fear that the rain will spoil his new coat of paint.

Harvey, a new tank engine on Sodor with a spotless record, gets into a nasty accident.

Henry is sick and needs special Welsh coal if he wants to stay on Sodor.

Gordon has problems with his whistle, while Henry plays a trick on some boys who threw stones at him.

A double feature of Thomas stories starts with two new engines, Donald and Douglas arriving on Sodor, and having trouble with a break van. Later, Percy is asked to tell Sir Topham Hatt to keep Donald and Douglas.

Thomas teases Percy on Halloween night, but it's Thomas who gets the last laugh. Rated T due to some freighting scenes.

Harvey, a new engine on Sodor, must save Percy after he derails.

Edward must brave bad weather and a broken crank pin in order to bring some passengers home.