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. Koko is yearning for adventure and she just might get it, as today the chuggers are making deliveries out of town. Vee asks old Puffer Pete to join them and, during their travels, they come across a mysterious old track that leads to Old Chuggington, which is now a ghost town.