Would you want to be the one without a thing that everyone had or something different about you. Well that's how zero-corne had live every day, he had no horn and he barfed out rainbows which wasn't normal. so this unicorn got picked on every day and he just wa nted to be like a piece of hay in the bayle.
So the next day him and his dad went to the prosthetic store to get a horn but none of them
worked.