Thomas the Tank Engine works at the Big Station, fetching coaches for the bigger engines. He keeps teasing Gordon the Big Engine, making him very cross. When the Shunter later accidentally forgets to uncouple Thomas from Gordon's coaches, Gordon decides to be really fast to tire Thomas out.

Edward is feeling sad, as all the other engines are bigger and younger than him. But when Gordon gets stuck whilst pulling trucks up a hill, it's Edward to the rescue.

In Autumn, Thomas stops by a signal. There he meets Terence the Tractor, and teases him about his caterpillar tracks. When winter comes, so does the snow. Thomas refuses to wear his snowplough, and when he does he breaks it. Due to this he ends up getting stuck in the snow...

Bertie the Bus challenges Thomas to a race, to see who can get to the end of the line first. Thomas faces obstacles such as stations, signals and a slow start, Bertie has bus stops and traffic lights - who will win?

Old Edward unknowingly loses part of his train due some bothersome cows who break out of their field and cause a coupling to come loose. He feels very cross when Henry and Gordon laugh about it and boast that cows wouldn't bother them. However, they'd reckoned without Bluebell the cow!