Koko, Wilson and Brewster learn skills and life lessons on their quest for many different badges.
The trainees guess whether or not Dunbar has loaded more weight onto their car.
Brewster and Koko earn their Carwash badges by learning how to wash dirty train cars.
The Chuggers need to solve a number of clues to find six coloured cars.
The Chuggers try and beat the record for the number of problems reported on the rails.
The Chuggers memorise a list of three destinations and visit them in the correct order.
Brewster learns about the importance of good presentation.
Wilson has to prove that he knows when to use his horn, and when not to use it.
The Chuggers must complete their safety checks before going on a long-distance night run.
Brewster has to transport loaded cars to the quarry, but it isn't as easy as he expects.
The Chuggers learn to follow the fire safety rules when they hear the alarm.
Wilson must remember where he is going to earn his Knowing Where You Are Going badge.
Brewster and Wilson earn their Helping Wheels badge by helping others on the tracks.
Brewster and Koko try to stick to schedule while transporting their passenger carriages.
Brewster looks after Ebo the elephant to be able to earn his Animal Helper badge.
Wilson has to invent a new and fun workout for himself to get his next badge.
Koko and Brewster must learn to trust each other to get their next badge.
To earn their Star Map badges, Koko, Wilson and Brewster must use the stars as a guide.
Brewster and Wilson try to earn their Emergency badges by helping Emery.
Koko transports different cargo from point A to point B, to earn her Cargo badge.
Concentrate Wilson! Wilson learns some tricks that will help him memorise things for his concentration badge.
Koko learns the best way to delegate tasks for delivering the morning paper.
The chuggers take a brake test for their Good Judgement badge.
The chuggers learn about being efficient when they work towards their Clean Up badges.
The chuggers need to keep their bumpers zipped all day to earn their Quiet badges!
The chuggers have to think of a way they can help make Chuggington even more beautiful.
Who Do You Appreciate? The chuggers must decide who it is that they each really appreciate.
Brewster and Wilson try for a badge recognising their public-speaking skills.
Koko and Brewster must each deliver three packages before three o'clock.
Wilson struggles to concentrate when working towards his fire warden badge.
Home, Wilson! Wilson is sent to a mystery location and needs to find his way home.
Wilson and Koko have to rescue a stranded chugger from the snow.
Koko and Wilson struggle to get their Loading badge.
Brewster invents a fun tour for visitors, to get his Show and Tell badge.
Hoot and Toot double-check the recycling in order to get their Green Machine badges.
Wilson has to use the camera car in three different ways to earn his Chug and Click badge.
Wilson has to learn about good customer service to earn his Service with a Smile badge.
Hoot and Toot learn about setting priorities for their First Things First badge.
Hoot and Toot must deliver their cargo before sunrise to earn their Night Chugger badges.
Wilson has to teach Hoot and Toot to use the paint wagon to get his Trainer badge.
Brewster learns about camouflage when he repaints the lizard's house.
Wilson learns to keep the tracks safe as he tries for his safeguarder badge.
Hoot and Toot have to round up all the stray cars around the depot in record time.
Brewster goes on the lookout for potential safety hazards on the track.
Wilson and Koko have to feed the animals in the snow, but Wilson can't find the sheep.
Brewster learns to share the workload with his teammates.
Toot discovers that having good manners is about what you do, not what you say.