Thomas pretends to be a hero to help ensure the movie screen Nia’s delivering arrives clean and pristine.
Super-fast Kana is convinced that her speed is all she needs to win the Race for the Sodor Cup, a competition that draws engines from all over the world. However, when a racing practice gone wrong causes her partner, Kenji, to get hurt, Kana ends up paired with Thomas. Kana and Thomas will discover that it takes teamwork to become the best racers they can be, but is it enough to defeat the international champions and win the Sodor Cup?
When Thomas accidentally breaks a light he's hauling to the Sodor Festival of Lights, he learns the best way to be the #1 engine is to be honest when you make a mistake.
Thomas needs repainting and must be patient as he dries, even though he feels like he's missing out.
Nia shows Thomas and Diesel how much unique beauty exists in Sodor, which comes in handy when they need plants to beautify a Plaza in Vicarstown.
When Thomas' whistle suddenly stops working, he learns that he doesn't need his whistle to still be himself.
Nia has volunteered for a big day of deliveries and is determined to make the perfect plan to get it done, but when things start to go awry, she doggedly sticks to her plan and refuses any help.
On the last day of Yong Bao's visit to Sodor, his friends dig up a giant keepsake to help him remember them.
When a big storm approaches, Thomas and company must complete a week's worth of deliveries by the end of the workday, but when Sandy needs repairs, Thomas and the gang realise just how important Sandy is to the team.
While the trains are setting up for the Vicarstown Fall Festival, Thomas is feeling down about the end of summer and the changing weather.
When Thomas throws away Diesel's favourite oil can thinking it's trash, he makes a promise to get it back and learns it's better not to touch things that aren't
While playing hide and seek with Percy, Diesel accidentally gets stranded on a barge that floats out to sea.
Thomas and Diesel take a friendly competition too far and put an important delivery rescue at risk as they race across Sodor.
Percy announces he's giving up his Ghost Scaring Machine - he's too old for it now. It soon becomes clear that the machine is good for more than just scaring ghosts.
Thomas is elated when he finds a cowbell on the side of the tracks, until his friends start hogging it.
When Sir Topham Hatt's Hat blows away in the wind before making an important announcement, Thomas and his friends race around Sodor, trying to catch it. The Hat remains out of reach until they learn to work together.
Nia is planning a big party to celebrate the anniversary of her arrival on Sodor, but she finds that her friends don't remember her anniversary and are too busy to even talk about it.
When Thomas spends the day carrying rockstar idol Harold across Sodor, he gains a new perspective on just how amazing it is to be his engine-self.
When Skiff gets a crack in his hull, Thomas needs to move him overland to Harwick for repairs, but Skiff's land-sickness makes that challenging.
When Nia suggests adding a song to spice up Sir Topham Hatt's new bench unveiling, he calls upon her to write a song for the ceremony, but Nia soon finds she may have bitten off more than she can sing.
On their way to a celebration for Thomas' 10,000th delivery, Percy tries to help Thomas with his big speech, but Thomas fails to listen. While distracted, Thomas doesn't notice when Percy falls off the track and gets lost. Percy tries unsuccessfully to find his way to familiar terrain.
When Bruno comes along to help Diesel get a heavy load to the Lighthouse, Bruno tries suggesting a safer route, but Diesel doesn't wait long enough to listen to him.
While Kana and Thomas deliver aquarium materials for the Vicarstown Fish Day, it's up to steady Percy and Nia to deliver the fish themselves.
When Ashima is set to arrive on Sodor, Thomas and his friends attempt to go the extra mile in order to make the island seem fantastic, but when the spectacular plan gets ruined at every turn, the friends' imperfect welcome still makes Ashima's arrival extra special.
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 to help Tess the Troublesome Crane load up a shipment of metal crates, she struggles with the new tool.
After Percy gets in an accident and ends up with a broken axle, Nia temporarily takes over his mail delivery duties for him - and her mail delivery is even quicker!
Thomas and Percy are excited to deliver a special balloon for the hot-air balloon festival, but while making the delivery, part of the balloon pops out of its tarp and the wind carries it skyward, along with Percy.
Carly has developed a terrible squeak, and Sandy finds an oil can to give her a feel-good surprise, but when she tries to make the fix bigger and bigger, she creates a wacky robot oil can squirter.
After a huge storm on the Island of Sodor, the power gets cut out. Thomas is tasked to deliver the generator to Knapford Station without getting stuck.
Thomas and Percy explore a brand-new track the evening before the route is opened. Everything seems new and exciting, and even a night spent stuck in the mud turns into a wonderful experience.
When Percy is kidnapped by the stink monster, the rest of the Biggest Adventure Club band together to create a plan to save their friend and stop the stink monster in its tracks!
With the holidays just around the corner, Thomas and Percy are determined to deliver the mail to all the patrons of Sodor.
It's Christmas time in Sodor and every engine is excitedly preparing for the holiday, especially Bruno who is excited to put his star on the tree.
While out on a delivery to Whiff's Recycling Plant with his beloved buddy Boxy in tow, Thomas realizes that his pal is on his last crooked axle.
After a fierce storm causes a rockslide in Crumble Canyon, mountain engine Ashima is eager to clean and clear the chaos with her new friends. However, Thomas and the others are concerned: if Ashima were to help them, the mucky mess could ruin her beautiful paint!
When Thomas is assigned to guide Diesel and Percy on their deliveries in case of snow, he must learn that he needs to use his plow responsibly for his friends and their tasks!
When Gordon leaves Thomas in charge for the day, Thomas sees it as his chance to prove what a good leader he is.
Tired and in need of relaxation, Kana decides to take a well-deserved break between deliveries.
Abuzz with excitement about the Sodor Flower Festival, Thomas is given the important task of transporting Sir Topham Hatt's prized roses to the event.
Nia must get a huge earth ball from Whiff's Recycling Plant to Norramby Beach, but all the rail lines are blocked!
When Diesel discovers that he doesn't just like to be known for his incredible strength, he finds an unlikely compatriot in Kenji -- who is tired of only being known for his swift speed.
It's Valentine's Day and no one on Sodor is happier than Percy -- he gets to deliver everyone's gifts to their friends throughout the island!
As the other engines prepare for a Valentine's Day party, Kana is worried: she doesn't know what to bring!
On Plant-A-Tree Day on Sodor, Thomas and Diesel both want to deliver the most impressive pine for the holiday, but they'll have to compete by delivering all the other trees first.
When Cranky gets overwhelmed on a busy and blustery day at Brendam Docks, he accidentally gets Riff and Jiff's names confused, sending them on opposite deliveries.
When cars go missing in the Mines, Thomas and Percy think they have a perfect adventure for the Biggest Adventure Club. But then they uncover that there was a similar problem at Lookout Mountain years ago. Thomas and friends set out to solve the two-headed mystery. Their search takes them under waterfalls, into unknown tunnels, new Crystal Caverns and ultimately brings the kids face to face with a mythical Mine Monster!
When multiple sheep come to live in Diesel's shed berth, the engines must find a way to get them back to their barn.
A new tunnel has been opened, and whoever goes through first gets their name on a plaque! Thomas and Diesel, however, get very competitive with the challenge.
When Carly does not return from saving Emily from an accidental derailing, a worried Sandy recruits the help of a bored Diesel to find her best gal pal.
When he accidentally causes all the lamp posts in Vicarstown to fall and shatter, an embarrassed Sir Topham Hatt requests Thomas to go on a secret mission to Harwick for replacements in time for the evening concert.
After yet another victorious race, Kana seems unbeatable! No engine on the island is as fast as Kana!
When a precious marble statue of his great-grandfather arrives, Sir Topham Hatt enlists the help of Thomas and Bruno in delivering it to Vicarstown Plaza.
After Salty the Diesel Engine returns from his worldly travels, he sings a shanty to Thomas and Percy about a legendary treasure lost on the island of Sodor.
On a particularly blustery Balloon Festival day, Thomas is tasked with retrieving any balloons that start to drift away.
Thomas learns that the rocket he helped deliver is finally falling back to Earth, into the ocean outside Sodor.
After Sir Topham Hatt messes up his instructions for Kenji's passenger delivery, Thomas is asked to set things right!
A rough night's sleep and a canceled beach day puts Thomas in the grumpiest of moods. Encountering Riff and Jiff with their usual happy-go-lucky attitudes, Thomas comes to the conclusion that he'll only be liked when he appears happy.
Thomas gets help from Terence the Tractor and Carly to assemble all hay bales. Carly and Terence manage to get everything together quickly, but soon Terence purposefully crashes into the hay bales sending loose hay all over the place!
When the engines have the day off to play, Percy is asked to referee their obstacle course race.
When Thomas and Percy transport an unlucky boxcar of bananas, Thomas starts to have bad luck wherever he goes and must find a way to break the curse.
When Nia causes an accident that sends sand into Tess's gears during a big delivery, Nia tries Sandy's new super-grease as a solution.
The engines are excited to see the Northern Lights with Harold the Helicopter.
Bruno and Thomas have to get stretch their comfort zones when Bruno's beloved map gets carried away by the wind.
When Percy and Kana have a near-collision, they enlist Safety Engine Emily and go to ridiculous extremes to introduce safety measures all over Sodor.
When Bulstrode and Cranky get into their crankiest fight yet, they learn how to express their feelings in order to save their friendship.
Thomas plays a new game called "SWITCHEROO", but gets lost and learns the value of routines.
When Percy is accidentally doused in blue paint, he gets the opportunity to be Thomas for a day.
When aging Toby comes to Knapford, he struggles to keep up with all the young engines. He still has a lot of zip in him, but around all these modern engines, he loses his confidence.
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 off-track thinking and the help of Skiff and Terence.
When Thomas' careless behaviour leads to Boxy being broken beyond repair, Thomas must confront his own behaviour.
Sir Topham Hatt has placed a plaque on the top of Lookout Mountain, so that tourists can take in all of Sodor in just one "sight". But when the efficient tour falls flat, Thomas takes visitors to really SEE Sodor.
When Sandy and Carly set out to make an art project together, Sandy focuses on its form and Carly focuses on its function. When their ideas clash and the project fails, they learn that it needs the right mix of both of their ideas to succeed!
