 The pink sea dragon Serendipity, born from the pink egg, and Kona, who is both deeply moved, are allowed to live on the island with the mermaid named Lola, who is the queen of Pure Island, and even the residents of Pure Island can be disappointed.However, the villain, captain Smudge, attack by aiming at the treasure "Tear of the mermaid" on the island.Kona, Serendipity, Lola and the other members of the island must work together to preserve the peace of Pure Island.