Hey, i am a 13 year old girl and i absolutely love h2o just add water. Its basically about 3 girls named Cleo,Rikki and Emma. When Cleo gets stuck on a boat, Rikki helps her. Gets the boat going picks up Emma and (with the help of Rikki) Get stuck on a island. While trying to get a phone signal Cleo falls down into a cave and Rikki and Emma go down after her. After they walk for a little bit they find a little pool which if they swim underwater would lead them out to the sea. When they get into water they find that the water starts bubbling and sparkling. They don't think anything of it and swim to safety. The next day the girls realize that they have tuned into mermaids. They decide not to tell anyone because they were scared they would end up in a freak show. Later on they find that they have powers over water. Rikki can boil it, Cleo can morph it and Emma can freeze it. While tyring to keep this secret but not let in ruin the lives Cleo decides to go to a party where Zane (The bad boy) throws her in the water while everybody goes inside Lewis (Cleo friends who she likes and he likes her two)is shocked to see her turn into a mermaid he helps and finds out that Emma and Rikki are mermaids to. I have only seen 6 episodes. Because i missed it on channel ten so i am now watching it on the Disney channel. So if you are looking a the show and thinking is this a good show. i would say to you no... Its a GREAT show. And i would definitely recommend you watch it.