Home to some twenty families, Circe Island is a paradise to some, and a prison to others. Follow the adventures of a group of kids who get into all sorts of mischief to compensate for their boring lives.
Julie establishes 'Fauna Watch' to guard against the intrusion of foreign species into the ecosystem of Circe Island. Her friendship with Ralph is strained when he attempts to transform Julie's club into a Sea Scout troop.
When Babe Keogh gets sent to the school on the mainland after a series of misdemeanours, the island kids discover that their own school will be closed due to falling enrolment numbers. How will they get Babe to come back?
The kids use wartime secret tunnels under their classroom as a means of getting past Hermes' new security measures so they can go to a concert on the mainland. Julie and Ralph join forces to make a political statement at the concert.
Kevin is accused of stealing money from Ralph and rigging the competition to win a ghetto blaster. His trial finds him and the other kids guilty of various deceits, but the theft itself is a tale of another kind.
Ralph and Julie's friendship continues to grow when Ralph agrees to help Julie stop whales beaching themselves on Circe Island.
Julie comes down with the measles and can't go to school camp on the mainland. Kelvin fakes illness to avoid going on the camp, planning to spend the week in the pinball parlours and fast food joints on the mainland.
Kelvin bugs Hermes' office. Hermes discovers the miniature transmitter under his desk and is led to believe that the kids are being brainwashed by a spy ring.
The good intentions of Circe Island adults to win the Tidy Town award are thwarted when the kids discover there is money to be made from recycling. Hermes searches for a spy within the communications base.
Ralph's dreams of reviving the Sea Scout troop, and for being accepted by the local kids, are boosted when the kids find a mysterious deserted yacht.
The island school is invited to take part in a pageant of maritime history presented on the mainland. Julie refuses to accept the orthodox historical view of a shipwreck incident off the coast in the 17th century.
When the annual sports carnival is announced, every kid except Ralph finds an excuse to pike. Nonetheless Charlie, aided by Hermes, coerces the kids into an exhausting fitness preparation routine.
The Maggot River team exceeds all the rumours of their ferocious competitive instincts at the sports carnival. Does Circe Island have a chance to win at all?
The rivalry between the base and the community, or more directly between the Knowles and the Crumps, comes to the forefront when Kelvin and Mrs Knowles start rival newspapers.
The kids sneak into the school to play a banned computer game called Iceman. Meanwhile, the island is put under quarantine while the health department determines the nature of a viral flu that two security guards have contracted.
Hermes' Greek heritage catches up with him when he learns his parents had betrothed him to a young girl while he was in the cradle. When the young woman turns up with her mother, the course of true love does not run smoothly.
When old Mr. Brinkmann is carted off to a nursing home, two women on the island get Ralph and Sally to close in. They want their love letters back.
Julie meets the new student teacher at the beach and falls head over heels in puppy love. All of the other kids in the class are equally bowled over by fun-loving Nick Coney - but for how long?
Guido is blackmailed by two street kids who have escaped onto the island after lighting a fire. Guido's secret life causes a number of unexpected developments, the most important of which is studying for his maths exam.
Gavin persuades his mother to take a holiday cottage on the island. When his return isn't welcomed with open arms, he takes revenge on the kids, convincing them that he knows the secret of a shipwreck off the coast.
Julie's ecological selflessness and Kelvin's profit motive makes them pretty equal rivals in the nature tours stakes. Kelvin resorts to a variety of dirty tricks to discredit Julie but she is always one step ahead of him.
The kids decide it's time to give Hermes the final shove. With him out of the way, life could be pleasant. They devise several schemes that fail to have him fired, and the schemes actually endear Hermes to Ms Selby.
Circe Island teacher Ms Selbys uses the arrival of a mysterious stranger to ignite the children's imagination for a creative writing exercise. The man lands on the island and sends the kid's imaginations running wild.
Kelvin's plans to set Babe on her way to stardom as a rock singer, and Hermes' plans to impress Ms Selby, both come apart when the new girl, Lou Docherty, demonstrates her talent for scientific experiments.
Julie and Gavin are appalled to discover that a big corporation is to sponsor a bicycle race - a race they believe will threaten Circe Island's wildlife. Hermes takes on Gavin in a nail-biting match race.
The children use the story of Robin Hood and his Merry Men as the model for a school film assignment. Ralph makes a dashing Robin while Julie makes a strong and demanding Marion.
Rosalind Defoe has plans to build a golf course on Circe Island. Kelvin is her biggest supporter but Julie and her helpers thwart the plans when their investigations reveal the site has a sacred place in Aboriginal history.
When the other children leave the island to attend a film festival, Guido is left behind to entertain his over-imaginative cousin Mario, only to find himself in a real life replay of an old movie plot.
The children are in preparation for the school fete when Julie and her friends find and help a young refugee girl who has jumped overboard from a boat to find sanctuary on Circe Island.
Geraldine and Gavin find dozens of bottles of wine washed up on the beach which sets off a wave of spiralling greed among the islanders and sparks an unexpected visit on behalf of the U.S government.
The girls' plans to farewell Sally with a grand party turn into a ghostly and frightening story. Hermes buys a series of self-improvement motivational tapes. Geraldine takes Gavin's place on an excursion with his mother.
Kelvin finds out that his father is a hero rather than the wimp he thought he was. Hermes has a hair-raising escape when the Defoe Corporation tries to blast a channel though the reef.
When Ms Selby sprains her ankle, the children discover to their horror that Hermes is to take over as teacher. Lou uses the arrival of her little cousin Amy to trick Hermes into believing that she can make clones of people.
Ralph's great expectations on being made a monitor at his private school and his desire to see the launch of the replica of Captain Cook's Endeavour lead him into serious problems.
A prince and princess choose Circe Island for a secret holiday, giving Kelvin the perfect opportunity to make money, mayhem, and princess doppelgangers.
A wave of dirty tricks by Kelvin and Lou threatens Ms Selby's plan to teach the children the value of democracy through the election of a student representative to the Parents and Citizens Committee.
Lou and Geraldine find a skeleton in a trunk at Jake's cottage. Hermes steals it, thinking it's the remains of his long-lost uncle. The kids save his pride, but his gratitude is short-lived when Kelvin goes one step too far.
Chaos threatens when all the adults except Hermes and Ms Selby come down with food poisoning, and Mr Knowles turns the base over to the children for a day.
Perth Wildcats basketball star Andrew Vlahov comes to Circe Island to make a mineral water advertisement with the kids - but Julie discovers something that's just not right about the ad.
Kelvin's plans to build a plane to fly Geraldine's guinea pig Marty from the mainland to the island are secretly thwarted by Geraldine.
Billy and Guido become unwitting kidnappers when Victoria-Elizabeth comes up with a grand plan to take revenge on her mother for cutting her allowance.
Hermes is convinced that a little stray dog found on the rocks by Amy and Babe is being used by Jake to smuggle secret information.
The kids take up Ms Selby's idealistic project to help the Circe Island elderly during Senior Citizens Week so enthusiastically that the elderly islanders rebel against the unwanted assistance.
An overseas police officer comes to the island looking for Jake. The children find out there is a price on Jake's head and search his cottage hoping to warn him, only to discover he's a traitor to the cause.
Upset by Jake's departure, Gavin becomes a knight in shining armour to thwart the Black Knights, clear Jake's name, and save the island from Rosalind Defoe.
The mystery about Jake is finally solved when a judge comes to Circe Island to rule on whether Rosalind Defoe's resort should be allowed to go ahead.
The new base commander, James Leong, arrives on Circe Island with his wife and two children, Garth and Sandy.
Horace Brinkman smuggles a champion racehorse onto the island but Aaron and Gavin lose the horse and before long, all the kids are in on the secret.
Krystal and Milan scheme to get their parents together but Sandy's fortune-telling ability pushes her towards another. Hermes' musical dreams are realised when he joins the kids' band.
Kelvin's poor grades result in his mother forcing him to move back into the house. Before he does, he must choose who will get to move into the plane: his sister or his cousin.
With Louella and her father departing Circe Island for good, Amy and Geraldine help her pull a farewell prank on Sandy and the other new kids during the solar eclipse.
To stop Peter from following her, Geraldine convinces her cousin that their grandfather murdered their grandmother. Sandy and Garth find out about Circe Island's biggest secret.
Gavin and Amy document Aaron workload as an apprentice to Mr. Brinkman to help get him some time of to pursue his sporting dreams. A new menace is unleased on Circe Island - Kelvin learning to drive.
A school excursion to Underwater World gives the kids the chance to teach Hermes the difference between sharks and dolphins in an effort to get Circe's beach reopened.
A sick racehorse and a school cooking contest are both livened up by Charlie Puckrin's secret spices. A famous French television chef gets caught up in Hermes' investigation into Jackie's poisoning.
Kelvin is asked to keep the island's kids busy while his father and the kids' parents sneak off to attend a surprise party for Kelvin's mother on the mainland.
The kids talk Mrs Mabbs into starting a school garden as a means of getting rid of their growing supply of horse manure but their product proves more popular than expected.
A musician arrives on Circe island to help the kids' band prepare for a gig in a shopping mall but his real reason for coming to the island is to reconnect with Hermes, his brother.
Krystal and Milan convince Zorba to show her mother that he is not "husband material" but their efforts backfire when Madeleine makes it her mission to fix his numerous faults.
The kids feed the hysteria surrounding the appearance of a crop circle to hide Jackie's existence on the island.
The kids compete for a spot on Circe Island's junior sailing team but when Sandy, a champion sailor, fails to make the team, Amy talks Susan Crump into leading an all-girl team.
The arrival on the island of two amateur horse thieves requires the kids to keep Jackie safe while at the same time keeping the horse's presence on the island a secret.
Garth and Sandy want to improve their band's image but their hopes for a new wardrobe backfires and the kids must face the prospect of having to wear school uniforms.
Tired of being taken for granted by her brother, Sandy enlists Milan to play a practical joke on Garth. Charlie takes advantage of Hermes' belief in superstitions to sell him a series of good luck charms.
A bikie gang invades Circe Island and Hermes is given an ultimatum to leave town. While the community rallies to drive out the invaders, Kelvin becomes their newest member. Sandy and Amy recruit some unlikely help to solve the problem.
With the only bridge off the island temporarily closed, the residents of Circe Island prepare to face the End Times when a tsunami warning causes panic.
Peter's habit of eavesdropping results in Geraldine placing a curse on him. Geraldine and Milan scheme to keep Circe Island's meteorites safe from a group of geologists.
An injury to Jackie is cause for concern but after sneaking her off the island for treatment, a new set of problems develop when a different horse is returned.
Jackie's secret ownership triumvirate organises an inspection of their wounded investment but the arrival of three suspicious Arabs prompts a security alert which brings a strict new security specialist to the island.
In search of a "normal mother", Krystal recruits her friends to help combat her mother's use of a costly psychic hotline.