Uni the unicorn is different from the other unicorns, because she believes that little girls are real. Far away, there is a little girl that believes unicorns are real. Uni and the little girl keep dreaming about each other.

"A four-leaf clover! A ladybug! A rainbow! It's a lucky day! Uni and the little girl want to see if there's really gold at the end of the rainbow. But then it rains. And they get lost in the forest! Can Uni, the little girl, and their friends still have a lucky day?"--Back cover.