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H2O: Just Add Water Season 1 Episodes
Season 1 Episode Guide
26 Episodes 2006 - 2006
Episode 1
Metamorphosis
Fri, Jul 7, 200625 mins
Silly skylarking schoolgirls Cleo, Emma and Ricki get caught in a cave on 'moon island' Mako. Before they can swim away, the moon lights them up at night. Back on land, they find that each will, when wet, quickly transform temporarily into a fish-tail mermaid. They dare not tell anyone, not even nerdy tutor Lewis McCartney. Two even discover they now have a magical control over bodies of water.
Episode 2
Pool Party
25 mins
The girls can't resist an invitation to a pool party thrown for hunky surfer Byron. However it proves impossible to prevent getting wet there, so they're rather lucky to be discovered transforming into mermaids only by Lewis, who is ready to keep their secret.
Episode 3
Catch of the Day
25 mins
The girls test how long they can hold their breath as mermaids. Thus they discover that ecologist Clio's pa Don Sertori's fishing boat is catching sea turtles and sneakily cut them loose. That proves dangerous, but they do expose the real culprit, Don's foreman Eddie.
Episode 4
Party Girls
25 mins
A worried Emma cancels her annual sleepover party when she realises the risk of growing a tail in front of all her guests. She and Lewis travel back to Mako Island to try to find out how the girls were transformed into mermaids, and Emma finds a mysterious locket at the bottom of the Moon Pool, and thinks that it may be important. Meanwhile, Cleo gets a job at the marine park's dolphin tank, and Emma is furious with her for taking such risks around water. But Cleo's determination to lead a normal life without being scared of every drop of water she sees convinces Emma, who reschedules her sleepover. But there is trouble in store when Miriam, upset that she wasn't invited to Emma's party, gate crashes with Zane. At the party, Cleo gets water on herself, and has to hide in a closet, but when the other girls at the party open the door, she has already managed to zip herself up inside a sleeping bag. The girls, however, almost feel Cleo's tail, and she has to use her power to blow up the drinks as a distraction. Jealous Miriam then tries to steal Emma's locket, but Rikki stops her, and gives it back to Emma. Emma then gives it to Cleo, saying that a mermaid who can hide her tail in the middle of a party is more than capable of taking care of so important a locket. Also, Cleo is confused when she is approached at the marine park by a strange old woman who seems to know her secret.
Episode 5
Something Fishy
25 mins
Cleo's secret diary falls into the hands of her younger sister, Kim. Kim grows suspicious when she reads in the diary that Cleo and her friends are mermaids, and shares her ideas with Emma's brother, Elliot. At first, Elliot doesn't believe her; but when Emma accidentally freezes his shower, Elliot becomes convinced that his sister is part of an evil mermaid cult. To put the kids off the scent, the girls decide to make them think that the diary is about someone else, and choose Miriam as their decoy, using their powers to make it look as though Miriam has powers of her own. Meanwhile, an oblivious Miriam enters the Miss Sea Queen pageant, and taunts Cleo, who decides to enter the pageant herself - unaware that Kim and Elliot are planning to shower the stage with water to expose Miriam and Cleo as mermaids. The plan ultimately fails and Miriam is humiliated. Meanwhile, Lewis goes to Mako Island to investigate the moon pool in order to find out how the girls became mermaids.
Episode 6
Young Love
26 mins
When Rikki saves Emma's brother Elliot from drowning, he develops a crush on her, and won't leave her alone. With Rikki getting annoyed, Emma and Cleo try to persuade her to let Elliot down gently; but with Rikki's fiery nature, that doesn't work too well, and an upset Elliot runs away. Rikki finds him at Lewis' brother's nursery plant school and apologises. However, they end up locked in and Rikki discovers that the sprinklers will wash the plants. The others must get them out before Rikki is transformed.
Episode 7
Moon Spell
25 mins
The strange old woman makes a reappearance at the marine park, and gives Cleo a mysterious warning not to look at the full moon. The other girls, however, are convinced the old woman is crazy, and ignore the warning, going ahead with Emma's planned surprise party for her father. At the party, however, Emma sees the reflection of the full moon in a bowl of punch, and then starts acting very strange, losing her inhibitions and being rude to the guests. Cleo, Rikki and Lewis try to keep her under control, but Emma ends up diving into the water, and turning into a mermaid. Worse still, when the others dry her off, her tail won't go away. How can they hide a mermaid in the middle of a party?
Episode 8
The Denman Affair
25 mins
Lewis gets a job as a lab assistant for Dr. Linda Denman, a beautiful marine biologist, and secretly plans to use her equipment to try to find out more about the girls' mermaid transformation. But he instead ends up putting their secret in danger, when he leaves a DNA sample from Cleo behind in the lab, and Dr. Denman discovers it. The girls realise that they are really in trouble when Cleo sneaks into Dr. Denman's lab, and discovers a scientific article on Dr. Denman's laptop about her unusual cell sample. With Lewis refusing to believe that Dr. Denman stole the cell sample from him (partly because he has a crush on her), Emma, Rikki and Cleo's secret could be about to be exposed to the world.
Episode 9
Dangerous Waters
25 mins
Rikki lands a seemingly harmless job collecting rare fish, but when she learns the man who hired her doesn't work for the marine park but is actually a dealer selling the fish for big profits, she decides to take on the task of setting things right.
Episode 10
The Camera Never Lies
25 mins
Lewis and the girls enter a short film contest held at the JuiceNet cafe, but Lewis, last year's champion, is fresh out of ideas. Rikki and Cleo are roped into doing a film about Emma's mother, but Rikki, thinking that the film is boring, sneaks off to shoot her own film, featuring some impressive underwater footage of sharks. Meanwhile, Zane, ineligible to compete himself, as his father is on the judging panel, recruits Lewis to shoot a film of him windsurfing around Mako Island, recreating (and hopefully beating), his father's windsurfing record of several years before. But things don't go to plan, when Zane falls off his windsurfer, right in the middle of Mako Island's shark breeding ground.
Episode 11
Sink or Swim
25 mins
Emma is flattered when local surfing hero, Byron, asks her to train him up for a swimming competition, but has to turn him down for obvious reasons. However, she changes her mind after learning that Zane is boasting to everyone that he will beat Byron by a mile, and begins training Byron without getting in the pool herself. But Byron is disappointed when Emma turns into a 'heavy training dragon', and the pair nearly fall out. Emma takes advice from her friends not to be so hard on Byron, but by being nice to him, she gives him the wrong idea, and they end up kissing. Meanwhile, Lewis continues his research on the girls, but Rikki does not like him treating her as a specimen, and tries to annoy him by disrupting his experiments.
Episode 12
The Siren Effect
25 mins
As another full moon approaches, Rikki pushes Cleo into a karaoke contest at the JuiceNet cafe, not realising that Cleo cannot sing. After embarrassing herself in front of everybody listening, Cleo heads back home with Emma, Rikki and Lewis to prepare for the full moon. But despite all their preparations, Cleo glimpses the moon in the reflection of some water in the bathroom sink, but when she touches the water, she doesn't turn into a mermaid. Cleo then stands before everyone in the house, and, to Rikki and Emma's surprise, sings with the most beautiful voice imaginable. Lewis realises that the full moon has turned Cleo into a siren - a mythological mermaid that used its mesmerising voice to lure sailors to their deaths. Cleo's voice, however, seems to be luring hundreds of teenage boys to her house, and under the spell of her voice, Lewis kisses her, and is thrown out by her father. It is then up to Emma and Rikki to keep Cleo out of trouble until the moon sinks; but, while they both sleep, Cleo phones up the local radio station, and gets her voice on the radio. The next day, the house is completely surrounded by teenage boys. They follow Cleo to the cafe where she sings, until the full moon sets and reveals her truly awful voice.
Episode 13
Shipwrecked
25 mins
When Zane's complaint results in the enigmatic Miss Chatham being evicted from her boat at the marina, Emma invites her to stay with her family. After overhearing Miss Chatham and her concern for her "treasure", Zane pursues her boat when she departs the marina. Emma and Lewis catch up with them in time to help with a medical emergency but when Zane gets trapped on the sinking boat, Emma must risk the water to save him.
Episode 14
Surprise!
25 mins
Cleo is counting the days until her 16th birthday, fully aware that her big day can only be ruined by one thing - another of her father's embarrassing birthday parties. Zane embarks on a hunt for the "sea monster" he saw when he nearly drowned. He recruits Lewis to help but Lewis promises the girls he'll do everything he can to keep Zane well away from them and Mako Island.
Episode 15
The Big Chill
25 mins
When Emma is left in charge of the Juicenet café, Miriam is determined to make things go wrong. When she turns off the cooling system in the cold room, Emma tries to fix it by freezing everything in the room, including Miriam hiding inside!
Episode 16
Lovesick
26 mins
Zane is relentlessly carrying on with his search for the mystery sea monster that saved his life, and tricks Cleo into giving him access to the marine park's library, so that he can learn more about sea creatures. Meanwhile, Cleo's friends and family become convinced that she has a secret boyfriend when she starts making odd phone calls and sneaking out of the house - unaware that she is only going to the marine park to care for a sick dolphin that seems to have a 'crush' on her.
Episode 17
Under the Weather
25 mins
Rather than risk exposure by getting wet in a rainstorm, Emma, Cleo and Rikki decide to play sick to avoid having to go to school. However, they overdo it and when the Dr is called to check in on the girls, she becomes alarmed and alerts the CDC that there may be a dangerous contagion.
Episode 18
Bad Moon Rising
25 mins
Another full moon is happening, the girls and Lewis try their best to make sure no moonlight can get in, and they succeed, until Lewis leaves. Cleo and Emma block the moon light, but Rikki sees it from a reflection in her water. Rikki loses control of her power and flees to Mako Island after being scared of hurting Cleo and Rikki. Meanwhile, Zane, being haunted by the tail he saw when he almost drowned, does some research, which leads him to Mako. He finds Rikki surrounded by fire. Feeling scared and lonely, they kiss, but Rikki ends up hurting Zane, and she doesn't remember until Zane asked her about it at the JuiceNet café, in front of Cleo.
Episode 19
Hurricane Angela
25 mins
Angela, who is Cleo and Kim's cousin, comes to town for a visit. She acts very grown up and sweet but when Cleo takes her to the amusement park with her sister, she disappears. Cleo and Kim search for her but all Cleo finds is a rather large bird in the bathtub at home. When Cleo tries to return the bird, she is caught and it is assumed she was stealing the bird instead.
Episode 20
Hook, Line and Sinker
25 mins
Keen angler Lewis enters the annual fishing derby held by Cleo's dad, with a secret weapon; a specially designed lure, that is actually hopeless at catching fish. With Nate and the rest of the contestants laughing at him, Cleo feels sorry for Lewis, and tries to help him by deliberately putting a huge fish on the end of his line. But her plan backfires when it is revealed that the fish she chose was a deep-sea tuna, a fish impossible to catch with an ordinary fishing rod from the shore. Lewis is accused of cheating, and is kicked out of the competition, leaving Cleo feeling guilty. She and Emma later put the same fish on the other contestants' lines to prove Cleo's dad wrong, and Lewis is reinstated as the winner. Meanwhile, Rikki visits an art exhibition, and has an awkward meeting with Zane. But the pair are forced to talk to each other when they get trapped on a balcony.
Episode 21
Red Herring
25 mins
When Byron tells Emma she's dependable with the same look & vibe, she feels predictable and decides to change her look by dying her hair. Zane thinks Miss Chatham holds the key to identifying the "sea monster" he saw when he almost drowned.
Episode 22
Fish Out of Water
25 mins
Rikki and Zane begin secretly dating but Cleo and Emma catch them together at the movies. Cleo and Emma demand that she stop seeing Zane, forcing her to choose between him and them. Rikki refuses saying that true friends would never make her choose.
Episode 23
In Too Deep
25 mins
Rikki and Zane see a locket in a shop window that looks just like the one Cleo found by Mako Island. Miss Chatham tells the girls how her and her friends, Julia and Gracie, were mermaids when they were 15. Miriam buys the locket to spite Rikki.
Episode 24
Love Potion
25 mins
Chleo and Emma are having problems coming up with an idea for a dance. The three girls get a bit upset when they have to cover up with long sleeves so as to avoid becoming wet. They come up with the best place to have the dance, at the Juicenet cafe. Lewis thinks he has found a way to help the girls with a type of spray that makes the girls waterproof. However, their mermaid skin doesn't seem to agree with it. Meanwhile, Chleo and Emma have problems with their guys not asking them to the dance. Byron for Emma, and Lewis for Chleo. Rikki is cool about everything because she has Zane.
Episode 25
Dr. Danger
25 mins
The prospect of going on a family vacation to a water-side resort doesn't sit well with Emma and her excuses don't go over well with her parents or brother who are all looking forward to their annual trip. The return of marine biologist Linda Denman [episode 8] concerns Lewis and the girls but Zane sees a possible ally (or worse, a competitor) in the search for his mermaid. With Mako Island firmly in Denman's sights, the girls' secret is on the verge of being blown out of the water.
Episode 26
A Twist in the Tail
25 mins
While Dr. Denman holds Lewis prisoner on her boat, she and Harrison trap the girls in the Moon Pool. Zane must choose between his father and helping the girls. Their only chance to avoid exposure is to give up their powers. Will they do it?
