H2O: Just Add Water

H20 takes place on the sunny coast; surf, sand and never-ending sunshine. Here we meet Emma, champion swimmer, her friend Cleo and rebellious new girl Rikki. When bad boy Zane plays a prank on Cleo, the three girls find themselves stranded on Mako Island. There, they discover a secret pool where, by the magical powers of the full moon, they are turned into mermaids! Any contact with water makes them sprout a tail in ten seconds – but once they dry off, they return to human form. They also now have strange powers over water which Cleo uses to get even with Zane. Can the girls be normal teenagers with this crazy secret?

Annoying Miss Popularity, Miriam, is having a pool party that the girls don't want to miss. But it's a risky activity for three mermaids: their secret could be out. Spurned by Lewis, Rikki discovers her mermaid power is to boil water at will! For a hot-head like Rikki, this is dangerous. Meanwhile, Cleo's close friend Lewis is getting closer to finding out about the girls; almost busting Emma and Rikki, as mermaids. At the pool party, Cleo's plan not to go swimming goes out the window as Zane and his mates toss her into the pool. But luckily the guys walk away before she turns into a mermaid. The only thing is – she needs someone who's not a mermaid to get her out – Lewis.

Emma and Rikki love being mermaids and exploring the underwater realms but Cleo, with her fear of water, still won't go in. Out on one of their amazing mermaid adventures underwater, Emma and Rikki save a sea turtle from a fishing trawler's net, and they are mistaken for sharks! A shark hunt ensues. Cleo overcomes her fear of water to save another turtle but finds herself trapped in a fishing net. Emma and Rikki free her just in time. Cleo is saved and has also discovered how amazing it is under the sea as a mermaid.

Determined to live her life as normal, Cleo confronts her fears and lands a job at the Marine Park, helping out to feed the dolphins. Despite her precautions, she gets splashed and, just as she's about to turn into a mermaid, a mysterious Old Woman, Miss Chatham, comes to her rescue. Cleo is certain Miss Chatham knows more than she's letting on. Meanwhile, out exploring the Moon Pool at Mako Island, Emma find a necklace; more proof that the girls are possibly not the first to have been there. Also determined to live a normal life, Emma goes ahead with a sleepover party. When Cleo is splashed at the sleepover, Cleo has to hide in a closet before she morphs. Cleo is revealed to the party – as a mermaid but in her sleeping bag! After this, our girls realise life will never be the same.

Lewis is busy testing the girls' powers, attempting to discover how they became mermaids. He warns them to stay on their toes if they want to keep their secret. Meanwhile, Cleo's younger sister, Kim, finds Cleo's diary, full of mysterious symbols and drawings of mermaids. Kim is totally intrigued and when she spots evidence of mermaidness, she comes close to finding out the girls' secret! But the girls put her off the scent, directing her attention to Miriam – and Kim's suspicions about mermaids are allayed when she mistakenly douses Miriam with a fire hose at the Queen of the Sea contest.

Rikki, as a mermaid, saves Elliot from drowning at the beach. She succeeds without Elliot seeing her tail – but there's another problem; he falls in love with her!