Wilson damages his wheels during a race and is too scared to go to the repair shed after hearing a story about Old Puffer Pete spending a week there having his wheels removed.
Brewster doesn't listen to Dunbar and goes too fast down a hill with a heavy hopper car full of quarry rocks. Can Wilson help Brewster brake before it's too late?
After a near-miss with some squirrels, Koko learns the hard way that sometimes it's best to be slow and steady. She also learns that Old Puffer Pete can be great fun, too.
Wilson, Koko and Brewster must learn how to use the ice-cream cars. Unfortunately, Wilson breaks his and has to use a very complicated old one. Will he master the antique car in time?
Koko falls out with the other Chuggers during training for the annual Chugger Championship race due to her bad attitude. Does she have what it takes to come first?
Olwin takes every group of new trainees out on an outward bound training course where she teaches them navigating skills to be used in the event of bad weather or emergencies.
After getting lost, Zephie is given a bell for emergencies. The siren is taken away from her because she uses it too often. Later, she topples over and needs help, but no longer has her siren. What will she do?
Koko finds a lost puppy and wants to keep it, but she realises a little girl is looking for the puppy and decides that she needs to take him home. Also, Koko, Wilson and Brewster do some paper delivery training.
The trainees take part in a sign-reading exercise. Wilson and Koko think Brewster is too slow, but Brewster is only being careful and is the first to receive an extra-special surprise.
The trainees take their passenger test under the strict eye of Mr Simpkins. The abrupt examiner makes Koko cry and Irving feels that he needs to have a word with Mr Simpkins.
Wilson gets distracted from his job of delivering ice-cream cars to the ice-cream fair and tries to take all the cars at once to make up for lost time. He realises he may have to ask the great Frostini for help.
Hodge wants to be more independent, but Eddie never lets him do jobs on his own. So when Wilson startles Hodge, causing him to accidentally break a junction box, Hodge decides to deal with it himself.
Wilson is assisting Frostini as he creates a new flavour for the mayor's banquet: Chugstastic Chewy Cheesecake. But they discover that the mayor's wife is allergic to cheese. Frostini will have to come up with something else urgently.
A film crew is coming to Chuggington and Emery is sure he can get in the film. The film crew finally spot Emery's talent and make him the presenter of the film, but he ends up going too far with his jokes and offends all of his friends.
The trainees are trying their wheels at pushing rolling stock around an obstacle course backwards. Wilson has some trouble until Morgan gives him some wing mirrors.
Brewster and Wilson begin a new hobby of "people spotting". Unfortunately, they get so wrapped up in their new hobby that they forget to do their jobs.
Brewster and Zephie think Old Puffer Pete is going to be scrapped so they decide to prove how useful the old engine still is. Unfortunately, they don't realise that it's Pete's old tender car that's going to be scrapped, not Pete himself.
Old 'Picky Nicky' Inspector Nicholas is coming to conduct Chuggington Depot's annual inspection. The chuggers swing into action getting things ready. Emery really wants to help, but ends up causing more chaos.
Mtambo's in a bit of a rut giving the same old tours everyday in the Safari Park. He wants some adventures in his life so that he has new stories to tell. Eventually, he realises that he can have fantastic adventures at home.
Koko, Wilson and Brewster are learning about emergency rescues with Calley. Brewster is convinced that he will never be able to rescue anyone, but he later saves Chatsworth from a fire and is given a special badge for bravery.
Eddie Finds Time: The depot clock is broken, and the schedule is in chaos! Eddie needs to go to Old Town to see if he can borrow a part from the old clock to repair the depot clock. Brewster Knows Best: The trainees are doing a sign-reading exercise. If they work as a team and follow the signs correctly - there'll be a wonderful surprise at the end of it.
Vee announces that the King of Buffertonia is coming for a tour of the Safari Park. Mtambo wants to give the best tour ever, so he does a practice run - with Hodge pretending to be the king.
Wilson, Koko and Brewster are being trained by their hero Action Chugger for the day. Wilson wants to be just like his hero and takes a jet pack and blasts into the skies, but he doesn't know how to come back down to earth again.
Zephie wants to pull freight just like Brewster. She decides to help him in secret and starts messing up his deliveries. Soon, she derails and finally understands that she is not built for hauling heavy loads.
A photographer is coming to take pictures of the steam engines and Olwin wants to look her best. Unfortunately, she gets covered in mud and gets soapy elephant wash in her tank. Soon, she's blowing bubbles and very embarrassed.
Irving leaves Koko in charge of the recycling yard. Wilson comes to assist her and soon the place is in a terrible state. Can they clean it up before Irving returns?
