This book is about two trains: one that goes very fast (and is a bit of a bully) and one that goes very slowly because he carries very heavy cargo. One day, the slow train gets stopped on the tracks because of danger ahead. As he's waiting, the fast train whooshes past him straight into danger. He gets caught between a broken bridge and rocks that have fallen on the track. The slow train moves the rocks slowly and steadily so the other can go back to safety. 
 I don't like the feel of this book. The illustrations are very simple and great for toddlers. The characters are super shallow and unrealistic. The slow train has no reaction whatsoever when the fast train calls him names. 
 Okay for storytimes, but I would choose something else if possible.