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?

Plum' is dissatisfied with 'Jeon Bok', a Jeju girl who met her mother on a family ... Bori's Dolhareubang beam turn to stone and harden, and Jadoo and her friends search for a way to restore ...