There's trouble on the tracks when Percy wants to borrow Thomas' carriages for an important job, but Thomas isn't sure he wants to share. Can the friends find a way to work together and save the day? The Really Useful Stories series is designed to support toddlers' development and explore key preschool themes including sharing, fear of the dark, making friends and teamwork. Each book includes suggestions for grown-ups about ways of using the story to help their child talk about new experiences. Thomas has been teaching children lessons about life and friendship for over 70 years. Children aged 2 years and up will love meeting classic characters such as Percy, James, Gordon, and Toby down on The Fat Controller's railway. Thomas ranks alongside other beloved character such as Paddington Bear, Winnie-the-Pooh and Peter Rabbit as an essential part of our literary heritage.