Skarloey and Rheneas' old line is closed down. Seeing how unhappy they are working at the quarry, Rusty is determined to restore the line to its former glory.
Summertime has arrived and the Refreshment Lady plans to open up a new tea-room. But she is having trouble finding a place to put it. Peter Sam has a clever idea that will help her out.
Donald and Douglas jump at the chance to visit Lord Callum's castle to set up for a reopening-party since they're homesick, but become nervous that a monster is in the loch they become stranded near after a landslide hits the break-van.
Thomas is disappointed to be taking ice cream ingredients rather than children. He gets into scrapes on the way, but does not realise this job is important, too.
Sir Handel returns to the narrow gauge railway, but he keeps shaking when he travels up hill. Can Sir Handel hide is problem or will the Thin Controller send him back to the quarry where bumpy engines belong?
All of the engines are given fun and important jobs when a circus comes to town. However, Percy is given the boring job of delivering coal and decides to try and help his friends with their jobs.
Thomas refuses to ask the narrow gauge engines for help after Duncan teases him. Thomas tries to locate his Christmas tree delivery and, when he thinks he's finally found it, ends up pushing it into the canal.
Toby intends to visit the farm, but the Fat Controller gives him three jobs to do. Toby approaches his friends to help him, but they're all too busy. Later, disappointed Toby finds out the reason why.
Gordon, close to setting a new record, uses up the coal that Henry needs, thinking it will make him faster. But Gordon feels guilty seeing Henry struggling later.
Fearless Freddie returns to the narrow gauge railway after many years away. Skarloey and Rheneas decide to race the old engine, but Freddie tricks them which swiftly leads to trouble for Rheneas.
Thomas offers to help repair Toby's holey roof, but he is not aware that Toby liked the holes, for the birds would build their nests and keep him company.
Thomas spends too much time daydreaming about what he will wear to a costume party that he winds up taking a tanker full of toffee, and soon crashes it by mistake.
Rusty rushes the workmen putting up signs in order to meet the Fat Controller. However, because they were rushed, all the signs point in the wrong directions.
When a shooting star is due to appear and the power company's generator breaks, Thomas takes longer routes to still see the star. But it gets too late and dark, and he gets lost.
A new crane called Rocky arrives on the island. Edward thinks that the new crane is "new-fangled nonsense" and can't be really useful. Will Edward be proved wrong after Gordon has a nasty accident?
After Skarloey is startled at the Wharf, he is convinced that he is a "scaredy engine". He spends the day sulking, but shows bravery by not even trying.
Thomas sees the children surrounding a giant snowman balloon, but the wind causes it to blow away, and its cords get caught on Thomas' buffers, making him wonder why it won't stop following him.
Emily is collecting Gordon's new coaches, but she gets into a fight with Diesel on the way. So Diesel steals the coaches and makes Emily chase him down.
Thomas wants to take the Sodor football team to their big match against the mainland. Unfortunately for Thomas, James has that job. Thomas tries to put James off the important job, but it doesn't work.
Thomas is frustrated when a new tank engine named Rosie follows him around. But as he tries to avoid her, he takes a route that is about to be hit by a landslide.
Rheneas tries to surprise his sad friend Skarloey by taking his trucks for him. But he leaves them alone for too long, and they go missing, making Skarloey sadder.
Thomas is determined to find the treasure that Salty spoke of, despite the other engines ridiculing him. But, he chooses to skip his job in order to search.
James is jealous of Edward when he is chosen for a poster instead of him. Determined to be as good as Edward, he winds up working too hard and wrecks Edward's poster.
Thomas decides to cheer Skarloey up by taking him on a tour of the Island. None of the sights surprise him, though. And, Thomas does not pay attention to the old coupling on Skarloey's flatbed truck, or the steepness of Gordon's Hill.
