The Challenge (1998)

Episode Overview

Nia, an exceptionally smart engine, is well-versed in many topics. However, when the Fat Controller assigns her the task of transporting Annie and Clarabel to collect passengers from Knapford Station for Thomas' Branch line, she struggles with reading numbers. In her time of need, Annie and Clarabel step in to help her learn, guiding her through the importance of numbers and ensuring she gains the confidence to complete her mission.