Chuggington (2008)

Season 1: Episode 15

It's time for the annual Chugger Championship Race - and speedy Koko is sure that the big, shiny trophy is hers! She's so determined, she spends hours practising and doesn't have time for anything else. Wilson thinks that the race is more important to her than her friends and the two of them fall out. When Wilson breaks down during the race, Koko must choose whether to help him.