|Actors:||Cariba Heine, Phoebe Tonkin, Indiana Evans|
When three normal girls stumble upon an ancient cavern they undergo a transformation that will change their lives forever. H2O Just Add Water sees three very different girls facing everyday teen problems with a twist -- they're mermaids with incredible powers! It is getting close to graduation for the mermaid girls. Their new found friendship with Ally grows stronger as the new trio face the challenges of school and under covering the dark secrets of the Mako Islands. The girls are growing up and discovering their destinies as mermaids.