They get a Super Axle.

When Percy is accidentally doused in blue paint, he gets the opportunity to be Thomas for a day.

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! Carly is shocked and confused. They turn the hay-bale stacking into a game, forming all kinds of structures Terence can crash into. Thomas worries they won't have enough time to complete the delivery.

When 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. The two friends are eager to see if the legend is true, but their journey comes to a snag when the rest of the Biggest Adventure Club refuses to join.

When Kana wants some alone time to herself, her friends misunderstand and think that she is upset about something.

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! Thomas plans an extraordinary welcome that includes a tiger, painted dock, and big dance number. But when the spectacular plan gets ruined at every turn, the friends imperfect welcome still makes Ashima's arrival extra special.

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.

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.

On the last day of Yong Bao's visit to Sodor, his friends dig up a giant keepsake to help him remember them.

When Gordon is unable to make an important delivery on his own, Thomas offers his help, but Gordon insists on second-guessing Thomas's every move.

When Percy loses Nia's parade flag before the big parade, Thomas helps them search for it before the event begins.

Thomas and Ashima spend the day helping Nia try to make her new Indian plant thrive in its new environment.

When an important shipment is delayed, Bruno and the gang have to learn the great value of waiting patiently.

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. During their journey, Thomas disregards Bruno's suggestions by doing what he thinks is best -- but his actions cause the statue's top hat to begin to crack!

Ashima discovers that she has to prove to the others that she's more than meets the eye.

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. It's his tradition! When the Christmas tree can't be delivered, Thomas and Percy learn why traditions are important to Bruno.

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! Percy thinks the replacement is permanent.

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.

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.

When Yong Bao visits Sodor, a jealous Thomas sets out to prove he's the braver train and challenges Yong Bao to a series of bravery challenges, only to have his plan backfire as the two end up trapped in the Old Mine.

Thomas and Percy have a difficult delivery, they must take eggs and other cake ingredients safely to Vicarstown for their bake-off.

Sandy's friends try to convince her that it's time to clean up, and helpful Whiff knows the perfect place for her old junk.

Thomas has been playing hard with Boxy, certain that his beloved friend/co-worker/toy will last forever. But when Thomas' careless behaviour leads to Boxy's being broken beyond repair, Thomas must confront his own behaviour.

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.

Bruno is beyond delighted -- he has received the gift of an updated map of Sodor from Sir Topham Hatt! He and Thomas can't wait to use it to navigate their busy schedule for the day. But when Kana's speedy whoosh blows Bruno's beloved map up, up, and away, Thomas and Bruno team up with Percy and Diesel to recover it! While searching the island far and wide for Bruno's prized possession, the gang discovers that there is something more important than keeping their schedules -- their friendship!

A rough night's sleep and a cancelled 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. He puts on a fake smile for the rest of the day, but his words don't match his demeanor and everyone can see right through him. Finally, Thomas comes across Riff and Jiff again, who reveal they're also upset about the cruddy day!

With the holidays just around the corner, Thomas and Percy are determined to deliver the mail to all the patrons of Sodor.

On Sodor Clean-Up Day, the engines all head to Norramby to help pick up, but when the mysterious Stink Monster takes Percy, the engines must work together to save 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.

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 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.

Percy announces he's giving up his Ghost Scaring Machine as he's too old for it now. It soon becomes clear that the machine is good for more than just scaring ghosts.

While the trains are setting up for the Vicarstown Fall Festival, Thomas is feeling down about the end of summer and the changing weather.

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.

It's Thomas's job to deliver a giant wooden dragon at the Medieval Faire at Kirk Ronan. The other engines want a turn, so they all compete to catch the dragon, pretending to be knights, thinking whoever catches it will get to deliver it.

Thomas misunderstands the Backwards Day game and accidentally delivers the wrong cargo to the wrong places.

While playing hide and seek with Percy, Diesel accidentally gets stranded on a barge that floats out to sea.

It is a special day for Harold -- the Northern Lights will shimmer over Sodor at sunset! He cannot wait to share this moment with his engine friends on Lookout Mountain. However, Thomas and the gang have a busy day ahead of them, which is impacted by damage to the Sodor Suspension Bridge. Carly and Sandy warn the excited engines that they should only cross the bridge in case of an emergency -- a rule that is ignored by Kana, Diesel, Nia, AND Thomas! When the bridge finally collapses and prevents them from reaching Lookout Mountain in time, Harold selflessly chooses to help his friends instead of see the Lights. His sacrifice teaches the young engines an important lesson: your actions add up - stay away until it is safe to play.

Thomas accidentally agrees to haul gardening supplies and watch pretty butterflies with Kana, all at the same time.

When Thomas and Percy must transport an unlucky boxcar of bananas, Thomas seems to have bad luck. Percy's positive attitude helps Thomas see the luck in each scenario, breaking the myth of the curse for a successful delivery.

Gordon has a day-long assignment for Thomas and the Troublesome Trucks -- they have to transport delivery after delivery to Vicarstown! The Troublesome Trucks are less than enthused -- this "sameroo" job will bore them out of their bolts! The Number One Engine is determined to make the day "amazeroo" for them and does his best to turn their repeated route into a new adventure! After their game of "Switcheroo" gets them lost, Thomas and the Troublesome Trucks learn that routine is not necessarily a bad thing -- in fact, it can be very helpful!

After Sir Topham Hatt messes up his instructions for Kenji's passenger delivery, Thomas is asked to set things right! However, as Thomas follows Kenji's trail, he repeatedly forgets to ask his friends for specific directions, preventing him from catching up to the speedy electric engine. Realizing he has to pay more attention to details, Thomas uses his wits, listening skills, and the help of his friends to make it to Kenji and get the passengers to their destinations on time.

Thomas and Percy volunteer to deliver a herd of cows, but the cows keep wandering off on their own adventures.

When music-lover Nia gets stranded before a big concert she's been waiting to see, Thomas brings the concert to her.

When a parade balloon Nia is set to deliver flies away, Thomas helps Nia adjust her plans to get it back.

Percy feels anxious about spending a night away from home during an overnight delivery with Thomas and Nia.

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. Carly is frustrated that she's making mistakes during the job. Sandy and Thomas reassure Carly that she needs give herself time to be bad at it.

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.

When Percy's lucky bell goes missing after his deliveries, he enlists Thomas to embark on a quest to crack the Case of the Missing Bell and solve who has stolen his prized possession.

When Thomas' friends notice that he is 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 entries for Sodor's Cake Festival, they cause a disaster.

When Thomas helps Nia make a delivery to the beach in Norramby, he insists he knows a shortcut and leads the way. It turns out, however, his memory isn't as good as he thought.

When Thomas builds an obstacle course for his friends, he gets upset when they won't play with it his way.

When Sandy learns about a massive shipment of sand that needs to be delivered, she is determined to help despite her size.

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.

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.

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.

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.

Diesel is upset about constantly getting boring jobs, so Kenji offers to switch places with him for the day. But the results are disastrous!

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!

Thomas learns that the rocket he helped deliver is finally falling back to Earth, into the ocean outside Sodor. Bulstrode, Carly, and their team of retrieval experts are on the job to fish the rocket out of the water, and Thomas wants to help!

Nia is nervous about working with Tess, the fastest -- and bossiest -- crane on Sodor! When Nia's plan for a safe and speedy delivery goes awry and causes Tess' wheels to clog with sand, they recruit handy Sandy to solve their problem. Luckily, Sandy has a new invention to get Tess up and going again: a tanker full of her Super-Slick Easy-Greasy Crane Grease! However, chaos continues to ensue when Nia gets stuck in the mud and the runaway grease spills all over Sodor! In the midst of the madness, Nia learns how to fix her original plan and save Sodor from slipping and sliding!

It's a beautiful summer day on Sodor and Sir Topham Hatt has a surprise: a special plaque with a map of the island atop Lookout Mountain! Sir Topham Hatt recruits the engines to lead "The Sight of Sodor" tour: to the plaque and back, missing all of the real tourist attractions! The engines are not enthusiastic about Sir Topham Hatt's attraction -- and neither are the island's visitors! As less and less passengers board Annie and Clarabel to see the plaque, Thomas and the gang decide to take matters into their own wheels and show off their favorite places on Sodor -- resulting in a lot more fun in the sun!

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 Thomas and Percy's plan to surprise Diesel goes awry, the two friends still manage to cheer up Diesel... just not in the way they expected.

When Thomas finds a treasure map, he creates The Big Adventure Club to seek the treasure. Sandy wants to join but Thomas says she's too little, so Sandy forms her own club.

When the trains must deliver in pairs, Thomas is disappointed to be paired with Diesel instead of his BFF Percy.