A swarm of bees takes shelter in Thomas' funnel, and he has to find a more suitable home for his new friends.
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.
Sandy and Diesel decide to do a magic act: "Disappearing Sandy". But when the trick works a little too well, Diesel sets out to search for his friend.
Thomas accidentally agrees to haul gardening supplies and watch pretty butterflies with Kana, all at the same time.
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 and Ashima spend the day helping Nia try to make her new Indian plant thrive in its new environment.
Thomas and the friends build an express track for Kana to speed fast enough and turn her electric crackle a bright red. However, the engines discover a duck pond in the 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' 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 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 pizza and pineapple upside-down cake picnic.
Terence's tread breaks, and he and Thomas explore Sodor after his repairs.
Sandy and Carly learn how to construct better after an attempt to repair a sea wall fails.
Winston, Sir Topham Hatt's new track car, causes problems by not seeking assistance.
Thomas, Kana and Diesel "race" to see who can go the slowest.
Bruno and the engines team up to complete an urgent delivery in windy weather.
Thomas and Nia's light play comes to James' rescue in the dark.
Kana gets a clean fast job while her friends are stuck with a muddy slow one.
Percy discovers the ducks are migrating, so he tries to get them to stay.
A gull lays an egg on Cranky and he refuses to move until it hatches.
Thomas and Diesel improvise engine versions of winter sports to escape a blizzard.
Percy takes a game of superheroes and villains too far.
Nia organizes a special event but must adapt when people and vehicles get lost.
Thomas loses a boxcar of treats and he uses his sense of smell to find it.