Wilson does not listen to Harrison when the pair go out to plough snow. Soon, Wilson gets stuck in a freezing cold tunnel and Harrison can't get him out. Will anybody see or hear them signalling for help?
Brewster has to teach Hoot and Toot to use the turntable safely, buy the mischievous duo run away. They soon get trapped on a turntable, but can they remember Brewster's training?
Emery is given the job of "runner" on the new Action Chugger film set and makes a nuisance of himself. Meanwhile, Brewster is spending the day doing boring litter-picking, but he soon gets an exciting new challenge.
To decide who is going to work down the mines, the chuggers hold a tug-of-war competition with snooty Harrison and old Speedy McAllister as the team captains.
Emery wants to get on the newspaper's front page. His wish comes true when he accidentally ruins Mr. Mistereoso's magic show. Emery is very upset, but Mr. Mistereoso has an idea which might save the show.
Hoot and Toot fall out after Hoot decides to take the lead for once and makes a mess of their jobs. It turns out that Hoot only does this because he is colour-blind and cannot tell the difference between green and red.
Brewster is given a new booster to test, but it goes wrong and Brewster does not tell Dr. Ling about it. Hodge later borrows the booster and is put in great danger.
Hodge is asked to take over quiz night when quizmaster Harrison loses his voice. Unfortunately, Hodge breaks his axle and because he is one-of-a-kind, finding another one in time for the quiz will be tricky.
Dr. Ling gives a lecture on meteorites and how one nearly crashed into Chuggington many years ago. This scares Hoot and Toot who attempt to send a museum exhibit of a meteorite back into space to get rid of it.
An ice storm hits Chuggington and the trainees are told to stay in their roundhouse. Koko really wants to help so does not listen Vee's instruction and ends up causing problems.
Wilson and Koko are given the task of sanding the icy rails, but Wilson's sand gets wet and won't spread. Can he dry it out before Olwin arrives on the mountain track?
Zephie is swarmed by bees after she accidentally knocks their hive out of a tree. Speedy McAllister comes to her rescue and, together, they find the bees a new home.
Brewster is to take Mayor Pullman over the Border Bridge in a ceremony to reopen it. During the practice run, it becomes apparent that the bridge is not safe. Can the bridge be repaired in time?
Mayor Pullman is touring Chuggington with her nephew Denzil to observe the trains working so that she can award one of them with the prestigious title of "Chugger of the Year".
The electronic defect detector malfunctions so Emery decides to take over its role. Emery is too cautious and soon sends every Chugger in Chuggington to be repaired which causes chaos.
Hodge wants to be helpful so, with the help of the ChugNav, he goes to pick up an important part from far away. Unfortunately, the ChugNav goes wrong and he has to accompany Action Chugger into space to fix the satellite.
