Children's animation. Chuggington is a special place where all the trains are known as chuggers. They talk, think for themselves and don't need drivers. Ride along with young trainees Koko, Wilson and Brewster as they embark on new adventures, make new discoveries and learn the true meaning of friendship. It is time for the annual Chugger Championship Race, and Koko is sure she can win. She spends hours practising and ends up arguing with Wilson. When Wilson breaks down during the race, Koko must choose whether to help him, or keep going and win.