Season 4, Episode 6
Wilson learns how to use a new piece of equipment. / Brewster and Koko get stranded.
Season 4, Episode 5
Wilson needs to guard the entrance to Safari Park while the Chuggineers work. / Everyone helps Koko when she can't slow down.
Season 4, Episode 4
The Chuggineers get trapped by a flood. / Koko gives the Mayor an amazing tour around Chuggington.
She's built for speed and loves a challenge! In Explorer Koko, everyone's best friend Koko is chosen to carry the King of Buffertonia and his dignitaries on a special tour of Chuggington. Koko also gets hooked on a computer game trying to beat Hodge's high score and finds herself in a spot of trouble when her net shooter fails on the tracks!
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