Rex's Secret is a story about a red fox named Rex. He is sad when his best friend leaves one summer because humans have moved into the forest. He cannot seem to find another friend until a new fox family arrives. Rex and Sara become great friends and play together the rest of the summer. However, on the first day of school, Rex finds out something about Sara that he did not know. Now he has to choose between his new friend and admitting a secret of his own in front of the entire school and the class bully, Francie. What will he do?