Real life mermaids, Sirena, Nixie and Lyla are part of a mermaid pod, which lives in the waters of Mako Island. As young members of the pod, it is their job to protect the Moon Pool, and guard it from trespassers. But on the night of a full moon, the mischievous mermaid girls neglect their duties. Sixteen year-old land-dweller Zac enters the Moon Pool and forms a special connection with Mako.
