When Mucky decides it would be better if he was a unicorn, Owl tries to help but wouldn't a true friend like him just the way he is?

Mucky is fed up with being a "drab old brown" horse who smells so bad that none of the other horses want to share his field.Instead, he wants to be a unicorn with a gleaming white coat and a long horn that the other horses admire.So Owl comes up with a plan to make Mucky s wish come true, and enlists the help of the other animals. They use a shell from the beach for a horn and milk from the cows to paint him. He wakes up thinking he s turned into a unicorn, but it soons rains and everything gets washed away. Mucky then realizes he doesn t need to be unicorn to have great friends who will notice him.