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 cars go missing in the Mines, Thomas and Percy think they have a perfect adventure for the Biggest Adventure Club.
As Percy complains that Thomas isn't listening to him, Thomas doesn't notice when Percy disappears, falling off the track and getting lost.
In Shake, Rattle & Bruno, while Bruno helps Diesel with a heavy delivery, Diesel fails to listen to his advice, causing them to both get stuck in Crumble Canyon.
Kana and Thomas deliver aquarium materials for the Vicarstown Fish Day, while Percy and Nia to deliver the fish themselves.
Getting Sodor ready for Ashima's arrival doesn't go to plan, but Thomas and friends still make it a special welcome.
The engines are revved up for their homemade obstacle course event known as the Tri-and-a-half-a-lon.
When Carly gets a new magnet, she is upset when she makes mistakes with it. But when Sandy finds herself in trouble, Carly realises she can use the new magnet to help!
When an accident puts Percy out of action, Nia takes over delivering the mail.
Thomas must execute a sky-high rescue after Percy, curious about a hot-air balloon he's transporting, unfurls and inflates it... and then gets carried right off the tracks by it.
When Carly gets a terrible squeak in her crane she has a hard time staying quiet during deliveries. As Sandy aims to fix it she forgets the simple solution and builds a wild oiling machine.
When a storm knocks out power, Thomas volunteers to deliver a generator from Kellsthorpe to Knapford. He's determined to complete this task on his own, but realises the delivery route has complica...
Thomas and Percy explore a brand new track the evening before the route is opened, and end up getting stuck in the mud overnight.
When a mysterious stink monster blocks the Biggest Adventure Club's path, it's up to the gang to stop him from stinking up Knapford!
With the holidays just around the corner, Thomas and Percy are determined to deliver the mail. But there's a massive snowstorm preventing the engines from seeing where they're going.
When the Christmas tree doesn't arrive in time for the holiday, Thomas, Bruno, and Percy have to figure out how to save a beloved Sodor tradition.
With his beloved buddy Boxy rolling on his last wheel, Thomas decides to fix his friend. He also discovers the power of the Four R's: reduce, reuse, recycle, and rethink!
When a rain storm blocks a track in Crumble Canyon, Ashima volunteers to help clear the rockslide, but she must overcome Thomas and his friends' bias that she's just a pretty engine.
Thomas insists on using his snowplow during a snow-less delivery, causing problems for his friends. Feeling guilty, he vows never to wear it again.. until it becomes the thing they need!
When Gordon leaves Thomas in charge for the day, Thomas sees it as his chance to prove what a good leader he is, but he finds that leadership is about more than just being boss.
Thomas and friends think their friendship with Kana is in trouble when she says she needs some alone time. But when her friends take it too far, will she be able to recharge?
Thomas is chosen to deliver Sir Topham Hatt's prized roses to Sodor's Annual Flower Festival, but when a skunk sprays him, his foul stench threatens to derail the day.
When Thomas accidentally leaves behind part of his train, and Bruno is the only one around, it's up to Bruno to get it to its destination on time.
On a delivery to transport a huge earth ball to Norramby Beach, Nia's bouncy cargo falls from her flatcar. She has to chase it across the island of Sodor, trying to plan each bounce!
When Kana puts her delivery on hold to play a game of tag, she risks not delivering it by the end of the workday day whistle.
Diesel and Kenji are frustrated they are only known for one talent - Diesel's strength and Kenji's speed - so they decide to switch jobs to prove they are more than one-trick engines.
Percy is excited to deliver gifts on Valentine's Day - but when disaster strikes, he learns that the feelings behind giving presents can be more important than the gifts themselves.
The new Cronk's Crossing has made deliveries on Sodor so much easier! But it's so fast that Toby is having a hard time shunting all the cars needed for the deliveries.
As their friends organise a special party, Sandy and Kana try to create a surprise by themselves. But when it goes wrong, they learn that togetherness is more important than any surprise.
Sandy and Carly attempt to fix a bridge that has collapsed. But when the repairs continue to go wrong, Sandy finally must accept the job isn't going to get done in time and switch gears.
Thomas and Diesel compete to deliver the most impressive tree for Plant-a-Tree Day on Sodor. But they overestimate their abiliites and need some big help for the job!
When a heavy fog settles over Sodor, Thomas has to take cruise ship passengers on a tour. But as they won't see much, Thomas realises he can take the tourists on a 'feels' tour...
When Cranky gets overwhelmed on a busy day, he accidentally gets Riff and Jiff's names confused and sends them on silly deliveries, leading to chaos in Sodor.
When Thomas, Percy, and Diesel take in a stray sheep, the engines get a little more than they bargained for when the fluffy creature and her herd overstay their welcome in the sheds.
When a new tunnel opens in Sodor, both Thomas and Diesel want to be the first one through. But will their stubbornness prevent them from enjoying the Spring Butterfly Migration?
Carly has gone missing somewhere on Sodor and it's up to Sandy and Diesel to use their detective skills to find her.
When Sir Topham Hatt makes a mistake and sends Thomas on a secret mission to fix his error, the Number One Engine recruits Percy to help him be as discreet as possible.
After Kana wins yet another race, Sandy the Speedster challenges Kana. The other engines don't think Sandy stands a chance, but they soon discover that Sandy knows her strengths!
When Sir Topham Hatt recruits Thomas and Bruno to deliver an important statue, Thomas must cooperate with Bruno.
When Salty shares a sea shanty containing the clues to a hidden pirate treasure, Thomas and Percy follow the clues across Sodor to search for it together.
When the Kraken hot air balloon gets loose in Sodor, the engines have different views on what they see. Thomas has to sort out the true story to save the festival.
The rocket that flew off into space last season is returning to earth. As the rocket comes down, Thomas can't resist a closer look - and consequently causes chaos.
When Kenji takes the wrong passenger car, Thomas offers to take the right car to him. But a comedy of missed details makes it seem like they'll never catch up with Kenji.
Thomas wakes up on the 'wrong side of the shed', struggling to be the happy train everyone expects him to be. Joyful Riff and Jiff help him realise that no one can be happy all the time.
When tasked with prepping hay bales for a huge hay delivery, Terence and Carly add a little fun to the work by setting out to create the tallest hay tower ever.
When the engines have the day off to play, Percy reluctantly agrees to referee their obstacle course race. But with each race, the teams get upset with Percy's rulings.
When Thomas and Percy must transport an allegedly unlucky boxcar of bananas, Thomas seems to have bad luck wherever he goes.
When Troublesome Tess pressures Nia, she causes an accident that sends sand into Tess's gears during a big delivery. Nia tries Sandy's new super-grease as a solution.
Harold the Helicopter's dream to see the Northern Lights goes awry when the overly-excited engine race ignores warnings to stay away from the Sodor Suspension Bridge.
When Bruno's new map gets carried away by Kana's speedy whoosh, Thomas, Bruno, and friends search throughout Sodor for their buddy's prized possession.
When Percy and Kana have a near-collision because they're distracted, they blame insufficient safety measures.
When Bulstrode and Cranky get into their crankiest fight yet, they have to learn how to express their feelings in order to save their sinking friendship.
Thomas plays a new game called 'Switcheroo' but gets lost and learns the value of routines, taking his normal route... 'Sameroo'.
When Percy is accidentally doused in blue paint, he pretends to be Thomas for a day and learns how much courage he has too!
When ageing Toby comes to Knapford, he struggles to keep up with all the young engines and loses confidence - until Thomas and Sandy offer a solution: a 'super axle'!
When an important shipment is delayed, Bruno and the gang have to learn the great value of waiting patiently.
When water lines break all over Sodor, the engines chug into action to deliver repair parts. But engines are not what this problem needs: it needs the help of Skiff and Terence.
Thomas has been playing hard with Boxy, certain that his beloved friend/co-worker/toy will last forever. But then Thomas' careless behaviour leads to Boxy breaking beyond repair...
Sir Topham Hatt places a plaque on the top of Lookout Mountain so that tourists can take in all of Sodor at once. But Thomas takes visitors to the places the engines love best.