Plots(1)
Rikki sets Cleo up at a karaoke contest as a joke, where she is humiliated due to her lack of talent. However, her singing ability undergoes a dramatic change when, in spite of the girls' precautions, she is hypnotized by the full moon. (Prime Video)
Gallery (4)
Photo © Network Ten
![H2O - The Siren Effect - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/196/165196104_3d9b60.jpg)
Photo © Network Ten
![H2O - The Siren Effect - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/196/165196107_aff1b8.jpg)
Photo © Network Ten
![H2O - The Siren Effect - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/196/165196105_120229.jpg)
Photo © Network Ten
![H2O - The Siren Effect - Photos](http://image.pmgstatic.com/cache/resized/w663/files/images/film/photos/165/196/165196106_6c5b9f.jpg)