Mermaids, Sirena, Nixie and Lyla are a portion of a mermaid pod, which lives in Mako Island's seas. As young members of their pod, it is their job to protect the Moon Pool and protect it out of trespassers. But on the night of a complete moon, the mischievous mermaid girls fail their own duties. The Moon Pool is entered by sixteen-year-old land-dweller Zac and creates a distinctive experience of Mako. Zac has been supplied powers that were amazing along with a tail. The mermaid pod is made to render Mako, leaving the 3 mermaid girls, cast from this pod. They know there's just one way they will be allowed to rejoin the pod: they have to purchase legs, venture onto territory and take back the abilities of Zac -- or even risk being outcasts.