Animated adventures with the trains that think, talk and don't need drivers. Join Koko, Wilson and Brewster as they learn new skills and life lessons on their quest for different badges. The chuggers learn about being efficient, when they work towards earning their 'Clean Up' badge. They must clean up litter, and then make sure that the litter gets recycled. The chuggers attempt different methods, some of which are fast and others which are more efficient.