The Big Freeze
When a big freeze hits the island of Sodor, Diesel finally proves himself to be a hero by bringing the coal for the steam engines.
More from Season 21
Episode 1
Springtime for Diesel
Diesel is always bumping into people and laughing, but when he does it to Daisy, her springs need fixing. In the Dieselworks, thinking that she is asleep, Diesel explains why he did it - it's his way of trying to make friends!
Episode 2
A Most Singular Engine
Diesel makes mischief between Daisy and Harvey by telling them both that the other is boasting of being unique. However, the two become friends while assisting each other on a job, and Diesel does not understand why.
Episode 3
Dowager Hatt's Busy Day
While the Fat Controller is sick, his mother runs the railway and creates chaos by getting everyone to do the wrong jobs! Oblivious to all the mayhem, Dowager Hatt supervises the hanging baskets at Knapford Station - until Emily gets involved.
Episode 4
Stuck in Gear
A branch gets stuck in the open gears of his crane, but Harvey is too shy to ask for help. Instead, he tries to fix it himself and ends up derailing himself inside a tunnel.
Episode 5
Runaway Engine
Millie is given extra work around the estate and gets agitated when Stephen and Glynn forget to clear up the garden waste. When Stephen also manages to hurt her feelings, and can't find her the next day to apologise, he thinks that she must have run away.
Episode 6
P.A. Problems
The Fat Controller splashes out on a new public address system, but the engines and passengers are struggling to hear the announcements. Holidaymakers end up at the quarry, quarry workers end up at the beach and Lord Callan ends up with an unexpected delivery of pigs!
