The mirror appears in an attic in the country. Daniel is on his way to met his father, step-brother Fergus and half-sister Mandy for the first time. The reception that he receieves is less than welcoming. After Mandy gets upsets and runs to the attic, Daniel follows her, in the reflection of the mirror he sees a girl. Mandy gets in the way and they inadvertantly go through to the year 1867. They get back only, later on, for Mandy and Lily become trapped and they spend the night in the du Lutrelle barn before the mirror is knocked back into alignment.
Aunty Lily decides to go through the mirror to try and steal the crown that the de Lutrelle family keeps hidden. Fergus goes through the mirror to try and help Constance, but gets side-tracked by the gold-fields. He trades a pocket knife for a land lease with one of the miners. After Lily's attempt to steal the crown is thwarted by Daniel and Constance, she moves the mirror when she returns through, with both Daniel and Fergus trapped.
Fergus continues working on the gold fields, while Daniel tries to find a way to help Constance. After Constance's father kicks Daniel out of the house he hides in the barn until all is clear again. Fergus lands himself in trouble with other miners and is rescue by Constance's father. Aunty Lily continues to cover up about where the boys are. After Lily replaces the mirror and goes through to snatch the crown out of Daniel's hands they struggle sending Constance and Daniel through the mirror and leaving Lily behind. Only to then realise that the mirror is cracked in several places.
The mirror continues to refuse anyone to travel through it while it is cracked. Lily now posses the crown in 1867. Meanwhile the mirror finally starts to repair itself. Lily travels into town and places the crown in the bank, while leaving Fergus hanging to the side of a cliff. Lily buys the de Lutrelle's property. Jenny and Doug hardly remember they have a son as Fergus begins to be erased from history. Daniel rescues Fergus while Constance tries to get the crown back from the banker. Back in present time Lily is on a shopping spree, buying as many clothes as she can. After spending $3512 dollars, the crown now in de Lutrelle possession, Aunty Lily is left standing in the shop in nothing more than her underwear. Caroline decides to go back home, leaving Daniel behind.
Constance and her mother have their photo taken and when it is developed there is a mysterious figure in the background. The children have been hiding the mirror so that Lily can't go through. Fergus scans the photo negative into the computer to try and find out who it is. While Gervaise works down in the cellar strange things are occurring. The ghost then appears to Constance and writes to ""Beware"". They discover that the ghost is that of Charles Jamieson who built Limerick house in 1842 when he came out from Ireland. They find out from a local New Zealander, who tells them that he died in the cellar. The ghost was warning them of a cave in happening in the cellar, luckily Constance goes through the mirror in time to save her mother from being crushed.
Aunt Lily is at it again, stealing anything from the de Lutrelle house that might fetch her a price back in present time. Constance's parents believe that their maid Mai-Ling who is to blame and loses her job. Daniel, Fergus and Constance go into town to find Constance's property which Lily has already pawned. Mandy locks herself in the bathroom because she feels that she's always being left out of everything. Mai-Ling is offered her job back and accepts, she also finds out the mirror's secret.
While out walking on the glazier, Daniel finds a frozen body. Violette tries to talk her husband into buying a cow to generate more money, but he refuses and decided to journey to sell his great-grandfather's stud box. They believe that the body that Daniel found is Constance's father. Constance sets out to follow her father, before the others get back through. A fellow tried to steal Constance's hat pin and they regroup together despite Fergus' injury. Gervaise return home after being robbed of his stud box, meaning it was the robber who would had died in the storm.
With Constance acting more and more ""unlady-like"" Gervaise decides that the best thing he can do for her is to hire someone to teach her to be more of a lady, this is where Mrs Graveney comes into the picture. Mrs Graveney, a poor widow by day and at every other moment the ringleader of a group of orphan thieves. One of them, Spike takes Mandy prisioner and won't let her go even after she spills the secret of the mirror, but why would he believe that?
They are now ready for guests at the farm and their first guests are the family of Rickenbackers. They want everything their way and act like they own the farm themselves so the kids devise a plan to get rid of them early by having Constance dress up as a ghost but things don't go according to plan.
Lewis is a prospector who hasn't had any luck. After trading his claim for a pocket knife he now has nothing and now spends his time painting the walls of a sea cave with his story of life. Fergus who has not cared for anything since gold fever hit him tries to reason with Lewis and discovers that there is more to life than gold. Back in the present day the kids are at an art gallery and see a painting by none other than Lewis Bast of an unknown girl, who was Constance.
When the children find out that in Constance's time they are killing seals for their oil they are more than a little angry because the result is there is none left in their time. A seal trapper gets more than he wants when Aunt Lily decides that she has to have him, and the children try and persuade him to stop killing seals. When a sick pup turns up, Mandy believes the only way to save it is by taking it through the mirror.
The Pinbody family are the focus on this episode as a faith healer arrives with his magic potions in Jamieson's Gully. However when the kids discover something interesting about one of the people who were magically healer they, along with Gervaise, are determined to show the Reverend Josiah Pinbody is nothing more than a con-artist.
Constance announces that the twentieth-century is a very much better place for women and she's not going back to the past. But when she attends a disco, she realises that nineteenth-century living does have some benefits!
When Gervaise removes some sacred greenstone from the river, Constance becomes worried about breaking a 'tapu'. Daniel and Fergus try to frighten Gervaise into returning the greenstone, while Constance goes in search of Tamihana, an elusive Maori elder. But will Tamihana help? And will he be able to convince the stubborn Gervaise before disaster strikes?
Mandy is miserable when it seems everybody has forgotten her birthday. Until the family turns on a surprise party and a surprise present: Victor, a golden retriever pup. Meanwhile Fergus is camping in a totara tree to prevent the neighbouring farmer felling it. But when Victor savages a sheep, the farmer resolves both to shoot the dog and get the two-legged nuisance out of the tree...
A travelling circus on the goldfields features a deformed 'elephant boy' - a freak for the audience to ogle. The children decide to help him by bringing him through the mirror for plastic surgery. But their plan misfires. Modern medicine is not as infallible as they thought, and meanwhile James has lost the only family he ever knew. Will Constance be able to put things right?
Aunt Lily is up to her old tricks again when she decides on the best way to be rich. She decides to 'invent' the paperclip years before it was even thought of, leaving the mirror to change the entire history of every paperclip. When the children find out what Aunt Lily has been up to they understand why the mirror isn't working properly. Mandy also helps an up-and-coming inventer discover his own invention: bubble gum.
When a party of tourists spot - and photograph - a scary, hairy 'Jamieson Gully monster', the media swoop down in droves. The boys set off of to track down the 'Yowie' but when they do come upon it, they run back to the house, terrified. It's the girls who finally confront it. What is this strange, loping beast lurking in the undergrowth? And what does it want?
One wild night in 1867, a cargo vessel runs aground near the goldfields. A young midshipman Jake is accused of negligence - a crime punishable by hanging. But Constance believes Jake's story and when she and her twentieth-century friends investigate the shipwreck, they unearth suspicious circumstances. Can they save Jake's life?
Lily is leaving Limerick House to go to a high-flying, corporate job. Or so she says. What she really does is depart with the mirror, while Ned Kelly steals Constance's. Ned puts his mirror in a bank vault in the nineteenth century; Lily aligns hers in the twentieth... and then pops through to grab the loot. It's the perfect crime. Can the children foil the greedy duo?
Constance comes upon Fergus and Daniel playing naked by the river. Panicking, she runs off and falls on to some rusty barbed wire. Tetanus! But back in 1867, tetanus and antibiotics are unknown. So how can the children save their dying friend?
Fergus is upset that there are no baby pictures of him and storms of to the attic. He goes through the mirror. Mandy finds a picture of Fergus as a baby and puts it in the frame of the mirror where Fergus is sure to see, however he never sees it as he becomes the baby Fergus. Constance tells Daniel and Mandy that her mom had found him and they plan to get him back. Back in present time the gang need to find the most recent picture of Fergus. The decide the picture that Their mom took that morning is the most recent. Returning through the mirror Fegus is clueless of what happened, to his self.
Caroline feels jealous when she returns to Limerick House and sees how well Daniel is getting on. Hoping to renew her bond with her son, she takes part in a kayak expedition. But her plan misfires when she and Daniel take a wrong turn and are flipped out into the rapids. Doug finds the empty kayak. Will his worst fears be realised?
Lilly has finally returned. Daniel talks to Constance, who's Mama wants to move on and follow the miners, and notices the fire. Gervase goes in and retreaves the carraige. Daniel calls to some miners to help put it out. Fergus is mad at Daniel because he has his real dad when he doesn't. He throws a baseball at him. Daniel ducks into the mirror, and at the same time Constance goes through it. The baseball shatters it and the shards rain through on the past side. Gervase saw Constance go through it and ducks as the raining glass shards shoot from the frame. Daniel and Constance find themselves still in Limerick house, but in a different dimension.
Now, though still in the attic, Daniel and Constance are trapped in another dimension. In the present time Fergus and Mandy are kneeling near the broken mirror. Fergus and Mandy gather the shards on their side. Fergus' idea is that if they put the mirror together on their side, it will fix its self on the other side, which works. A woman tells Constance how it was right for Constance to snatch the crown, because the heir is dead. The mirror appears and Constance goes through. The kids go to her grave to find a message with a clue to where the crown is. Someone comes with a letter from Constance, stating that they are the new proprieters of the Crown Foundation, Daniel decides to go home to Sydney with his mum.