It's the festive season in the world wide waters, and Narwhal is looking forward to cozying up with a good book, singing and partying with his pod pals and enjoying some warm waffle pudding. But most of all he's excited about the arrival of the Merry Mermicorn! According to Narwhal, she's part mermaid, part unicorn and completely mer-aculous! Jelly is of course skeptical about the existence of the "Mira-Miny-What-A Corn" ... even when he receives a mysterious present.