Thomas, a young tank engine with a shiny blue exterior, clickety-clacks his way through daily work and fun adventures alongside his locomotive friends on the island of Sodor.
When a swarm of bees take shelter in Thomas' chimney, the Number One Engine has to be persistent to find a more suitable home for his buzzy friends.
When Percy's lucky bell goes missing after his deliveries, he enlists Thomas to embark on a quest to solve who has 'stolen' his prized possession.
As the engines are delivering items for a magic show, Sandy and Diesel decide to do a magic disappearing act, but then Sandy disappears for real!
When Thomas promises to spend time with both Nia and Kana he tries to be in two places at once, which proves to be impossible.
Sandy doesn't want to get rid of any of her treasure trove of junk, but with the help of Whiff, Henelope, and a runaway stop sign, she discovers a new use for her beloved belongings.
Thomas, Ashima, and Nia spend the day trying to make Nia's new Indian plant thrive in its new environment, and learn how much influence they have in making Sodor a home for each other.
Kana wants to speed fast enough to turn her electric crackle a bright red. The engines help build a long, straight express track but a duck pond blocks the only viable path.
When Thomas and Kana ignore the needs of their engines, they end up exhausted and unable to complete their deliveries.
Percy has been hiding an oil leak, afraid of what it means to get it fixed. When it starts to interfere with his deliveries, Percy needs Thomas and his other friends to help him.
When Thomas's friends notice he's glum about Percy being away for repairs, they try to help him by playing a game to see who is best at cheering him up.
When Thomas and Diesel compete in an impromptu speed contest while carrying prized cakes for Sodor's Cake Festival, they cause a disaster that really takes the cake!
When Whiff has to leave Sodor for the day, the recycling responsibilities fall behind schedule! Thomas decides to get the Troublesome Trucks to help pick up the slack.
When Sir Topham Hatt's plans for a kazoo concert in the park are kaput, Thomas uses creative solutions to help Sir Topham Hatt pivot to a pizza and pineapple upside-down cake picnic.
When Terence breaks his tyre tread, Thomas takes him to get fixed and explore some of the island. But Terence's off-track energy isn't quite fit for more orderly places.
While repairing a sea wall, Sandy and Carly accidentally cut off a consortium of crabs from the shore! When the crabs start to wreak havoc among the farm animals, the duo must direct them back to t...
When Sir Topham Hatt gets an overconfident new track car named Winston to drive him around, Thomas has to find a way to get this new guy to listen.
On a windy day, the team has to band together to get an important delivery done. But when it seems like the elements will be too much, they learn that they can ask each other for help.
When Thomas, Kana, and Diesel 'race' to see who can go the slowest, their lack of speed provides lots of challenges - and lets Thomas see small things he might have otherwise missed.
Thomas and Nia play with spare lights, excited to stay up all night to test them. But James thinks that goofing is a waste of time and is much too busy.
When the engines take on a muddy job, Kana is given the best job on a fast clean route, until she realises that she would rather use her skills to make a difference to her friends.
When Percy discovers that his beloved ducks are about to head south for the winter, he does everything he can to get them to stay.
When a gull builds a nest on Cranky, he refuses to unload Bulstrode's deliveries until the egg hatches, so Thomas and his friends roll in to get the job done!
Thomas and Diesel get stuck in a snowstorm while making important deliveries and have to improvise train versions of winter sports to escape the blizzard and make it to Sodor's Winter Games.
Percy takes a game of superheroes and villains too far and hurts his friends' feelings, accidentally becoming Sodor's best bad guy.
Nia leads the gang in planning the annual Fall Farmer's Market but, when no one shows up, she has to learn to adapt and figure out a new way for everyone to enjoy the special event.
Thomas is tapped to deliver a sealed, sweet-smelling boxcar. But when he loses the boxcar, Thomas and his friends must use their sense of smell to track it down again.