en Cuevana 3. Choi Ja-doo, a cheerful girl who captivated Korea, is back as the Little Mermaid?! Totally exciting! The love line between Prince Yoon-seok and Princess Plum?! Besides, her rival is Princess Eunhee?! Please look forward to the story of the Little Mermaid that Jadu is making anew! ** You can also find out the secret about Minji's hidden eyes!"