Just a quick personal aside- this book is old and well loved. When I rediscovered it a few years ago, I found the following note inside the cover:
isn’t this just how life with kids is?
Anyway…this caterpillar named Charlie is newly born but he can’t figure out why no-one wants to play with him. Everyone he approaches calls him ugly but he can’t understand what that means. He does know that it hurts his feelings.
Eventually the seasons change and in time he emerges as a beautiful butterfly and soars above all the animals that made fun of him. They all want to play with him now but he is so happy flying high!
In the end, he makes a friend that he helps see their worth as well. It is nicely illustrated and helps children realize they can rise above those who can’t appreciate them for who they are