Wilson, Brewster and Koko try to earn their 'weighing it up' badge by guessing whether or not their loads get heavier or lighter when Dunbar changes them.

Brewster must keep clean whilst transporting a car of manure.

In order to earn his 'Horn Honking' badge, Wilson has to prove that he knows when to use his horn, and when not to use it.

Koko, Wilson and Brewster try for their fire safety badges, but when the alarm sounds, will they remember the rules for evacuating a burning building?

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.

Wilson, Koko and Brewster need to keep quiet for a whole day.

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.