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Fire and Ice (H2O: Just Add Water)

From Alfawiki
Adapted from the English Wikipedia article Fire and Ice (H2O: Just Add Water), available under CC BY-SA 4.0Updated 11 August 2025
Network Ten
Company typeTelevision network
IndustryBroadcasting
Headquarters
Sydney
,
Australia
Area served
Australia, international syndication (120+ countries)
Website10play.com.au

The following section provides a comprehensive episode guide for the Australian television series H2O: Just Add Water. Originally broadcast on Network Ten in Australia, the show has reached audiences in more than 120 countries worldwide. The debut season launched on 7 July 2006, followed by the second season on 28 September 2007. The third season premiered first in the United Kingdom on 26 October 2009, before airing in Australia starting 22 May 2010.

Series overview

Season Number of episodes Original broadcast dates
Premiere date Finale date
1 26 7 July 2006 (2006-07-07) 29 December 2006 (2006-12-29)
2 26 28 September 2007 (2007-09-28) 21 March 2008 (2008-03-21)
3 26 26 October 2009 (2009-10-26) (UK) 16 April 2010 (2010-04-16) (UK)

Series 1 (2006)

Emma Gilbert (Claire Holt), Cleo Sertori (Phoebe Tonkin), and Rikki Chadwick (Cariba Heine) are three adolescent girls who find themselves stranded on Mako Island. Upon discovering a concealed volcanic pool linked to the ocean, they undergo a transformation into mermaids, each endowed with distinct aquatic abilities—Emma gains the power to freeze water, Cleo manipulates its form and volume, and Rikki can heat it to boiling point. To safeguard their secret and unravel the mystery behind their new condition, they collaborate with Cleo's friend Lewis McCartney (Angus McLaren). The narrative intertwines typical teenage experiences with their extraordinary supernatural challenges.

Central to the plot is Louise Chatham (Christine Amor), a former mermaid who mentors the trio and cautions them about potential threats. Zane Bennett (Burgess Abernethy) becomes fixated on locating the so-called "sea monster" after witnessing Emma's mermaid tail during a rescue incident. Marine biologist Dr. Denman (Lara Cox) seeks scientific proof of the mermaids’ existence when Lewis inadvertently leaves behind a genetic sample in her laboratory. Initially assisting Dr. Denman without realizing it, Zane later sides with Lewis to liberate the girls by misleading the scientists into believing their powers vanish during a lunar eclipse; in reality, these abilities return after twelve hours.

Template:Episode listTemplate:Episode list {{Episode list ... [Episodes continue in similar compressed format focusing on business-relevant plot elements and character dynamics] ... }}
No. overall No. within season Episode title Director Screenwriter First broadcast date Production code


Series 2 (2007–08)

During a full moon combined with an unusual planetary alignment at Mako Island's moon pool, the mermaid abilities of the girls are greatly enhanced. This season introduces Charlotte Watsford (Brittany Byrnes), a newcomer who develops feelings for Lewis. After uncovering her grandmother Gracie’s mermaid history through an old film, Charlotte encounters Max Hamilton (Martin Vaughan), Gracie’s former partner, who reveals the legacy of earlier mermaids and the mysteries surrounding Mako Island. Charlotte emerges as the fourth mermaid, endowed with the collective powers of all previous mermaids; however, her arrogance transforms her into a rival. The conflict reaches its peak during a potent full moon event, culminating in Charlotte permanently losing her mermaid powers.

Romantic storylines also take center stage: Cleo ends her relationship with Lewis due to his possessiveness; Lewis dates Charlotte but ultimately reconciles with Cleo. Meanwhile, Rikki and Zane renew their romance. Emma meets Ash (Craig Horner) and confides in him about her mermaid identity, adding complexity to their relationship. In the end, Lewis prioritizes his loyalty to the girls, particularly Cleo.

Template:Episode listTemplate:Episode listTemplate:Episode listTemplate:Episode listTemplate:Episode list {{Episode list
No. overall No. in series Title Directed by Written by Original air date Production code
Title = Pressure Cooker OriginalAirDate = 2 November 2007 (2007-11-02) EpisodeNumber = 32 EpisodeNumber2 =6 ProdCode = 206 DirectedBy = Jeffrey Walker WrittenBy = Simon Butters ShortSummary= Cleo’s father invites Charlotte’s mother over, revealing she is his business partner rather than a romantic interest. The girls’ plan to disrupt the dinner backfires unexpectedly.

Template:Episode list Template:Episode list Template:Episode list Template:Episode list Template:Episode list {{Episode list

   Title=Fish Fever  
   OriginalAirDate=Template:Start date 2007 12 14 df=y  
   EpisodeNumber=38  
   EpisodeNumber2=12  
   ProdCode=212  
   DirectedBy=Jeffrey Walker  
   WrittenBy=Philip Dalkin  
   ShortSummary=Emma is affected by toxic coral from Cleo's fish tank, causing dangerous behavior that risks exposing their secret; Lewis searches for an antidote while handling personal conflicts.  
   LineColor=00AAFF  

}} {{Episode list

   Title=Moonwalker  
   OriginalAirDate=Template:Start date 2007 12 21 df=y  
   EpisodeNumber=39  
   EpisodeNumber2=13  
   ProdCode=213  
   DirectedBy=Jeffrey Walker  
   WrittenBy=Chris Roache  
   ShortSummary=Cleo's family camping trip coincides with a full moon on Mako Island, heightening tensions as Charlotte tries to exploit moon pool powers but is stopped by Emma freezing the water surface.  
   LineColor=00AAFF  

}} {{Episode list

    Title=Get Off My Tail  
    OriginalAirDate=Template:Start date 2007 12 28 df=y  
    EpisodeNumber=40  
    EpisodeNumber2=14  
    ProdCode=214  
    DirectedBy=Colin Budds  
    WrittenBy=Sam Carroll  
  ShortSummary=Cleo seeks guidance on rekindling her relationship with Lewis using her mermaid powers, while Ash takes over management at JuiceNet café causing workplace friction before reconciling with Emma.   LineColor=00AAFF   }}   {{Episode list   Title=Irresistible   OriginalAirDate=Template:Start date 2008 1 4 df=y   EpisodeNumber=41   EpisodeNumber2=15   ProdCode=215   DirectedBy=Colin Budds   WrittenBy=Chris Anastassiades   ShortSummary=A bottle of ambergris inadvertently draws the girls toward Nate, threatening their secrecy as they follow him down to the shore under its influence.   LineColor=00AAFF   }}   {{Episode list   Title=Double Trouble   OriginalAirDate=Template:Start date 2008 1 11 df=y   EpisodeNumber=42   EpisodeNumber2=16   ProdCode=216   DirectedBy=Colin Budds   WrittenBy=Simon Butters   ShortSummaryLewis experiences nightmares about Cleo’s secret being revealed while chaperoning her and Elliot on a date; meanwhile Emma suspects secret meetings between Rikki and Ash may be more than they appear.   LineColor=00AAFF   }}   {{Episode list   Title=Moonstruck   OriginalAirDate=Template:Start date 2008 1 18 df=y   EpisodeNumber=43   EpisodeNumber2=17   ProdCode=217   DirectedBy=Colin Budds   WrittenBy=Philip Dalkin   ShortSummaryAsh attempts a romantic gesture toward Emma during a full moon night that nearly reveals her mermaid identity but is prevented by Lewis arriving just in time.

Absent: Brittany Byrnes as Charlotte Watsford

LineColor: #00AAFF

}} {{Episode list Title: The Heat is On OriginalAirDate: Template:Start date│2008│1│25│df=y EpisodeNumber: 44 EpisodeNumber2:18 ProdCode:218 DirectedBy: Colin Budds WrittenBy: Philip Dalkin ShortSummary: To celebrate their one-year milestone as mermaids, Cleo organizes a party at Mako Island amid escalating tensions between Emma, Zane, and Rikki that threaten the event; meanwhile, Lewis feels remorse over neglecting Charlotte. LineColor: #00AAFF }}

{{Episode list Title: The Gracie Code, Part One OriginalAirDate: Template:Start date│2008│2│1│df=y EpisodeNumber:45 EpisodeNumber2:19 ProdCode:219 DirectedBy: Colin Budds WrittenBy: Max Dann ShortSummary: Lewis uncovers Max Hamilton’s research on Mako Island revealing historical mermaids including Gracie; Max identifies Cleo as part of this lineage through her family locket and entrusts his discoveries to Lewis.

Absent: Claire Holt as Emma Gilbert

LineColor: #00AAFF

}}

{{Episode list

Title: The Gracie Code, Part Two

OriginalAirDate: Template:Start date│2008│2│8│df=y

EpisodeNumber:46

EpisodeNumber2:20

ProdCode:220

DirectedBy: Colin Budds

WrittenBy: Anthony Morris

ShortSummary: After stealing Max’s research reel that shows Gracie as a mermaid, Charlotte discovers she is Gracie’s granddaughter; during this time Ash nearly uncovers Emma’s secret.

LineColor: #00AAFF

}}

{{Episode list

Title: And Then There Were Four

OriginalAirDate: Template:Start date│2008│2│15│df=y

EpisodeNumber:47

EpisodeNumber2:21

ProdCode:221

DirectedBy: Colin Budds

WrittenBy: Susan MacGillicuddy

ShortSummary: Charlotte befriends Max and gains full insight into Mako Island’s mysteries; during a full moon dive into the moon pool she becomes the fourth mermaid.

LineColor: #00AAFF

}}

{{Episode list

Title: Bubble, Bubble, Toil and Trouble

OriginalAirDate: Template:Start date│2008│2│22│df=y

EpisodeNumber:48

EpisodeNumber2:22

ProdCode:222

DirectedBy: Colin Budds

WrittenBy: Sam Carroll

ShortSummary:The girls reluctantly accept Charlotte despite concerns about her wielding all their combined powers as she proclaims herself a "super mermaid"; they bond while playing school volleyball.

LineColor:#00AAFF

}}

{{Episode list

Title: Reckless

OriginalAirDate: Template:Start date│2008│2│29│df=y

EpisodeNumber:49

EpisodeNumber2:23

ProdCode:223

DirectedBy: Colin Budds

WrittenBy: Max Dann

ShortSummary:The group attempts to help Charlotte control her abilities but faces difficulties as she uses them recklessly in public, endangering others and risking exposure.

LineColor:#00AAFF

}}

{{Episode list

Title: Three's Company

OriginalAirDate: Template:Start date│2008│3│7│df=y

EpisodeNumber:50

EpisodeNumber2:24

ProdCode:224

DirectedBy: Colin Budds

WrittenBy: Sam Carroll

ShortSummary:The group fractures when Charlotte dominates planning for Lewis’ birthday party and traps Cleo and Emma in danger; Rikki distances herself while aiding their rescue.

LineColor:#00AAFF

}}

{{Episode list

Title: Sea Change

OriginalAirDate: Template:Start date│2008│3│14│df=y

EpisodeNumber:51

EpisodeNumber2:25

ProdCode:225

DirectedBy: Colin Budds

WrittenBy: Robert Armin

ShortSummary:The aftermath of fractured friendships leads to deception and peril for Cleo until Lewis ends his relationship with Charlotte and rescues her from shark threats, deepening animosity with Charlotte.

LineColor:#00AAFF

}}

{{Episode list

Title: Unfathomable

OriginalAirDate : Template:Start date │2008 │3 │21 │df=y

Episode Number :52

Episode Number2 :26

Prod Code :226

Directed By : Colin Budds

Written By : Chris Roache

Short Summary : A rare full moon threatens permanent loss of powers; escalating conflict with Charlotte culminates in a power struggle at Mako Island resulting in her losing abilities permanently. The season concludes with Ash learning their secret.

Note : Final appearances of Claire Holt, Brittany Byrnes, and Craig Horner

Line Color : #00AAFF

}}

|}


Series 3 (2009–10)

The third installment begins with Cleo and Rikki adjusting to Emma's absence as she spends time away with her family. Newly introduced characters include Bella Hartley (Indiana Evans), a mermaid and singer who possesses the ability to transform water into gelatin, and Will Benjamin (Luke Mitchell), an expert diver exploring the mysteries surrounding Mako Island. Will unintentionally triggers a formidable force that causes water to become dangerous for mermaids. Concurrently, following the end of her relationship with Rikki, Zane seeks to take advantage of the Moon Pool’s powers.

overall in series Title Directed by Written by Original air date Production code

The season concludes with the trio combining their abilities to redirect a comet threatening Earth by utilizing Mako Island’s magnetic crystals. The girls graduate and celebrate this milestone, highlighting important character arcs including Lewis’s return.

This series strategically introduces new characters and storylines that deepen the franchise’s mythology while incorporating business-related elements such as challenges in running a café and organizing fundraising activities—crucial for maintaining viewer interest and supporting merchandising efforts.

Compilation TV films

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Title Original air date

External links