Kilala and Rei go to the world of The Little Mermaid. Rei is captured by Ursula who tells Kilala, Rei is a real Prince. Kiala later questions him about it and he confirms he is a Prince of somewhere he can't remember, but he is still himself. Kilala's Parents come home from Paradiso, only to tell Kilala the kingdom is under attack and they barely got out. This makes Rei remember he is actually the Prince of Paradiso and questions why he couldn't remember something so important before. He gives Kilala the Tiara and promises to return for it soon. He leaves on a ship back to Paradiso.
The Volume ends with Kilala's mother telling her she has what it takes to become a true princess and urges Kilala to find a way to Paradiso to help Rei's country.