Unicorn has a dream, a beautiful, bewitching, bubbly dream: Unicorn longs to be a mermaid! (Sometimes. Not all the time.) With the help of her trusty craft kit, Kitty is determined to make her best friend Unicorn's dream come true. But one elaborate DIY mermaid tail later, plus a beach trip that doesn't go as planned, and Unicorn doesn't feel very beautiful or bewitching. When Unicorn starts to feel insecure, can Kitty help make him feel enchanting again?