To earn their Star Map badges, Koko, Wilson and Brewster must find pictures in the stars and use the them to guide them where they're going. Brewster finds it very difficult to see the pictures, but when he starts to use his imagination, it becomes very easy and clear.

The chuggers have to think of a way they can help make Chuggington even more beautiful. Koko decides to wash down the platforms, Brewster paints a few fences, and Brewster picks up litter.