A show which showcases the latest pieces of rolling stock is the talk of Chuggington. Hodge overheats on the way to the show and has to think on his wheels to get rescued. Meanwhile, Harrison proves hard to work with on the track-walk.
Koko, Brewster and Wilson are doing their advanced safari training with Mtambo. Wilson gets his camouflage wrong and is chased around Chuggington by a charging rhino.
After a run-in with a magnet car, Wilson himself becomes magnetic. Soon, Wilson is covered in scrap metal and the repair shed have no idea how to stop it. Luckily, Koko has an idea.
Zephie starts a club and is very selective about who can be in it. Wilson starts his own club which Zephie is not pleased about. Soon, all of the chuggers are falling out and it's all Zephie's fault.
A new steam engine called Piper arrives at Chuggington. Toot is jealous about all the attention she is getting, but soon realises the new Chugger could be a good new friend.
Koko, Wilson and Brewster learn how to safely derail themselves to prevent accidents while new Chugger Piper sneaks out of the depot before she is ready.
Dunbar is leaving Chuggington for a while and leaves his trainees with new Chugger Skylar, but Wilson isn't sure he'll be able to manage without Dunbar.
