Koko is yearning for adventure - and she just might get it, as today the chuggers are making deliveries out of town. But Vee asks Old Puffer Pete to accompany them - and he's so SLOW. They always have to wait for him to catch up - and he's always letting off those embarrassing bursts of steam! During their travels, they come across a mysterious old spur track. Pete tells them it leads to Old Chuggington, which is now a ghost town. The trainees decide to explore the old town on their own and get helplessly, hopelessly lost. When Wilson accidentally sets off the old Chuggington Central Whistle, Pete puffs his way through the maze of tracks to investigate. He rescues the youngsters and takes them on a fascinating tour of the old town, which he still knows like his own pistons! The trainees realize that Pete isn't such a fuddy duddy after all and there's a lot that they can learn from him.

Eddie lives so far away from Chuggington that he just can't seem to get into work on time. After getting into trouble with Morgan yet again, he decides to sleep at the depot, to be sure to be on time. But Calley's emergency callouts keep him awake all night, and he oversleeps. Late again! Hodge and the trainees try to find a new home for Eddie in Chuggington.

The chuggers are learning to carry passengers comfortably, using dummies specially made to wobble if the ride isn't silky smooth. Dunbar will test them at the end of the day. Koko and Brewster take to it easily, but poor Wilson struggles. He goes off to practise by himself in the park, but things don't go well.

Brewster is so excited about seeing the new Action Engine movie today at the ride-in movie theatre. But Irving gives him the job of taking tin cans to the foundry for recycling. Brewster worries that he'll never be back in time for the film - unless he can be as speedy as his Super-chugger hero! Brewster charges off and gets caught up in pretending to be his hero.

On her way to see a lamb at the farm, Zephie gets lost! She shouts for help and rings her little bell, but no one hears her. Morgan fits her with a siren so that she can call for help if it ever happens again. Zephie falls in love with her new accessory and can't resist playing with it and setting the siren off - much to the annoyance of the other chuggers.

Twiga the giraffe is going to have a baby! An excited Koko has been given the job of keeping watch overnight, and fetching Dr. Gosling, the vet, if Twiga goes into labour. That night Mtambo (the safari tour guide train) tells Koko all about nocturnal animals. Koko learns how they use their senses to get round in the dark. When Twiga goes into labour, Koko goes to fetch the vet.

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. Using the crane, he jams the wires back in and shuts the doors. Easy. But then strange things start happening. Lights and signals stop working, Vee malfunctions and chuggers are sent to the wrong destinations. Hodge and Wilson realize it must have something to do with the box they broke! If Eddie finds out, he'll never trust Hodge to do anything on his own again - but if Hodge doesn't tell him, it could take Eddie days to figure out what's wrong. Hodge finally musters up his courage and confesses. A relieved Eddie fixes the box. Eddie promises he'll let Hodge do more jobs by himself and Hodge promises to tell Eddie straightaway when things go wrong.

Zephie is given the important job of transporting newspaper reporter 'Rag' and photographer 'Snap.' They're doing a story about Morgan's new rail-going cycle, which Zephie isn't happy about. It's her job to take Morgan places! She feels threatened and wonders if she should find a new job. Rag lets her wear his press pass just for fun, and forgets to retrieve it.

The trainees are trying their wheels at pulling rolling stock around an obstacle course. Ambitious Wilson tries the fire wagon. The course seems easy - until Dunbar tells them they have to do it backwards! Wilson goes first, but makes loads of mistakes. Discouraged, he slopes off and bumps into Harrison, who gives him a tip: he should drop down a gear for more control. Great!

Brewster overhears Morgan talking about something going to the scrap yard, and then hears Pete saying how worn out he is. Brewster jumps to the conclusion that it's Pete who's going to the scrap yard! He and the other trainees determine to help Pete by doing all of his work for him. A farce ensues as the trainees rush around doing Pete's work as well as their own.

Chatsworth has had a very busy day and wants a quick snooze, but everything and everyone conspires to keep him awake. First the trainees are playing loudly in the park - and then Vee calls him out on another long job. Meanwhile, at the quarry, Harrison unknowingly gets some rocks trapped in his engine.

Calley is doing emergency rescue training with the trainees. If they do well, they'll earn a badge. Calley takes them to her underground chamber to show them all of her emergency rolling stock and the computer that tells her when a chugger is in trouble. Then they go out into the country to do some practical exercises. Calley asks Brewster to pretend to rescue Zephie.

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. Hodge gives him a lift, as he's taking the chugscan back to the factory because it's spouting gibberish. Meanwhile, Olwin takes the trainees to Old Town, and on the way tells them about the Old Town Mystery Chugger.

Puffer Pete's firebox is completely worn out and he can't move without it. It's going to take ages to have a new one made. Until then, Pete is stuck and can't move by himself. Meanwhile the trainees are playing hide and seek in Old Town. Brewster hides in a shed. When he emerges, he's covered in bits of old junk. Koko and Wilson think it's funny!

The trainees are thrilled to be spending the day training with Action Chugger. He puts them through some intensive stamina exercises, but Wilson just wants to get to the bit where they use jetpacks and fly. Action Chugger laughs and tells him that there is much more to being a super chugger than flying. Brewster is the first to have a go on a flight simulator.

A magazine photographer is coming to Chuggington to do a feature on steam trains. Olwin is determined to look her best for her picture and heads for the chugwash. Along the way, she encounters Wilson and Brewster tugging a car back and forth between them, arguing over who gets to deliver Ebo the elephant's special soap. Neither of them wants to do the other job - a quarry delivery.

Old Puffer Pete has been working in Chuggington for 150 years, and the mayor wants to commemorate his anniversary with a special show. The trainees are going to do a carefully choreographed routine - but it all goes wrong. Wilson doesn't listen, Koko goes too fast, and Brewster doesn't seem to know his right from his left!

Vee needs someone to pull the royal carriage for the prince of Buffertonia. Chuggers race in to get the job, but Harrison is first - thanks to cutting some corners and running a red light or two. Happy to have the job, he goes off with Puffer Pete to learn the route. Pete notices that Harrison has got into some bad habits. He takes shortcuts, ignores signs and breaks the speed limit.

On the hottest day of the year, when the trainees are going to help Frostini deliver ice cream, there??s a power failure and it looks like all the ice cream will melt! Speedy has an idea: he and Frostini will go to the ice caves in the mountains and bring back ice to keep things cold. Meanwhile, the trainees must look after the refrigerator cars.

Action Chugger is in town making a movie and Emery lands the exciting job of assisting on the film set. Brewster is a little envious, especially as his job for the day is litter-picking. He worries that his fellow chuggers think he??s a bit dull. Calley tells him that a job is what you make it and shows him that the litter-picking wagon can do some cool things.

Nobody wants to go down the mine to collect the rolling stock for cleaning, so Speedy suggests they settle it with a chug of war! Two teams will face each other across a bridge with a piece of rolling stock between them. The first team to pull the rolling stock off the bridge is the winner and the losers will clean the mine. Harrison captains one team, Speedy the other.

When Emery takes reporter Rag around town as he covers exciting news stories, he wishes he could get his picture in the paper! Rag tries to get an interview with the famous magician, The Magnificent Mysterioso, who has come to Chuggington to do a show. As Emery waits, he sees his chance. Smoke! The stage must be on fire! Emery uses a water cannon to put it out.

Hoot and Toot are double ended shunting chuggers. Hoot gets fed-up of Toot always being at the front, so Toot agrees to let him lead for the day. Hoot mixes up a delivery of red tomatoes and green apples. He also refills the spray shed with the wrong colour paint and Wilson is sprayed green instead of his usual red! Toot is upset with Hoot for getting everything wrong.

Dr Ling is experimenting with a new invention that can help chuggers increase their speed - the Booster! Brewster helps her to test it. The new booster makes him go super-fast, but it has some terrible side effects. Brewster gets a lot of attention and loves being thought of as a speedy engine, so he says nothing about the problems.

Hodge loves Chuggington Quiz Night – so when quizmaster Harrison loses his voice, Hodge volunteers to take his place. But he has a really busy workday with Eddie and doesn’t get any time to think up his questions. To try to save time, Hodge overloads himself and breaks his axle. Because Hodge is one of a kind, they won’t be able to find a replacement in time for him to host the quiz.