The adventures of Thomas the Tank Engine and his friends on the island of Sodor. Thomas is often in trouble and finds it difficult to be a useful engine.
Daisy's springs need fixing after Diesel deliberately bumps into her. Thinking that she is asleep, Diesel explains why he did it - to make friends!
Diesel makes up rumours that Daisy and Harvey are making lofty claims about themselves, which leads the two to get into a spot of trouble.
When Sir Topham Hatt arrives at Tidmouth Sheds with a cold, his elderly mother, Dowager Hatt, shows up and fills in for him.
When a branch gets stuck in the open gears of his crane, Harvey is too shy to ask for help and tries to fix it himself - with disastrous results.
Millie is very cross with Stephen and Glynn for not helping her when she is given extra work. The next day Stephen cannot find her.
The Fat Controller splashes out on a new public address system, but the engines and passengers are struggling to hear the announcements.
Toby is given a replacement carriage while Henrietta has her seats refurbished. However, Hannah is headstrong and reckless.
Cranky works through the night to impress the Fat Controller after he's teased about his age, but the more effort he puts in, the more mistakes he makes.
Carly the new crane is fast and keen. Cranky tries to keep up with her, but their hooks get entangled and they end up stuck fast and unable to move.
When Bertie breaks down, Thomas takes on his passengers. But they keep requesting unscheduled stops, which makes him run late.
Philip wants to know why his train number is 68, and following an avoided accident, he starts to believe it's his lucky number.
A screeching sound leads Rosie to suggest that James should get his brakes checked, but he is too proud to do that, which leads to trouble.
Animation. When Edward's shed is being repaired he sent to Philip's shed, then the Steamworks, then Brendam Docks, but they are all too noisy for him to sleep!
The Controller orders all engines to stay in their sheds, but Thomas thinks he has enough coal for one more run, and he gets stranded in the snow.
When Donald and Douglas try to deliver a very long load of steel pipes to Vicarstown, they get into another argument, but Emily arrives to help them out.
Terrence shows off that he can go anywhere but when he falls through a frozen pond Thomas has to save him!
Daisy the railcar is looking forward to Christmas at Vicarstown, but she is disappointed when there is no snow and the children are singing all wrong.
Spencer and Gordon are competitive and argue about platforms, leading them to each take the wrong coaches.