It's the traintastic world of Chugginton where eager engines Wilson, Koko and Brewster are learning to become working trains. Brewster's visit to the Safari Park results in monkey mayhem, Koko has a hasty encounter with some squirrels and Ebo the Elephant causes mischief for Wilson, plus is there a dragon on the loose? Zephie helps the vet check on the animals and Mtambo shows he's the best tour guide ever.