Four old friends from high school have little in common, besides the fact that they were 'the losers' in high school who tried to avoid the attentions of the popular school bully, Tiffany Turner. Now twenty seven-years-old and content with their lives, the friends receive a surprise invite to their ten year reunion. Will facing Tiffany mean sweet revenge or a re-evaluation of their current lives?

As Bec, Frances and Sophie celebrate their eight million dollar lottery win, Jenny reacts badly to missing out. Despite Bec's best attempts to help talk Sophie and Frances into sharing, Jenny's over-the-top rant seemingly seals her fate. But when a series of events leads the girls to question the value of friendship in their lives, a collective decision is made to split the prize money four ways. Now all of them are multi-millionaires. And, more importantly, well and truly part of each other's lives once more.

As the arrival of the money looms, the reality of the win forces Bec, Jenny, Frances and Sophie to reassess direction of their lives. A misunderstanding, a friendship challenged and a relationship on the brink forces them all to make some life altering decisions.

Jenny throws a party to celebrate Bec and Matt setting the wedding date. The event brings everyone together for the first time - and with it, more than a few surprises. The morning after the night before sees all the girls dealing with ramifications of the evening, before Bec makes a shock announcement regarding her special day.

The girls take to the fields on Race Day. Launching their new business, Zach and Frances have organised a marquee, but some nasty advice from one of Zach's former female colleagues leaves Frances wondering if her new partner can be trusted. Meanwhile, a coincidental meeting with a former university professor reignites a painful memory for Sophie and she hits the races in anxious party mode. But her new-found sobriety means no alcohol, and she throws herself into any action going. Then, Tiffany Turner underestimates the girls' reformed friendship when she arrives with a big announcement for Jenny.

Bec is faced with a tough choice when Tiffany Turner reveals her life is in tatters and risks losing custody of her four year old son. All she needs is cash for a lawyer. Bec is left torn. Jenny doesn't buy Tiffany's sob story and advises Bec not to give her the money. Against her better judgement, Bec refuses to lend Tiffany the money. Having been asked to help organise Bridget and Wes' big day, Jenny gets a little too carried away and changes all of Bridget's wedding plans. Annoyed, Bridget accuses Jenny of interfering because Jenny's never going to find a guy and have one of her own. Sophie invites her parents over for lunch to tell them about her lottery win. Softening them with expensive gifts, Sophie's offended when her father concludes she's in the money because she's a prostitute.

When Bec, Frances and Sophie swap stories of their 'first time' Jenny is forced to admit she's still a virgin. Sick of feeling like it's a noose around her neck, Jenny sets out to find a man to do the deed with. Frances is stunned to realise she has romantic feelings for Zach. Jonathan insists it's been obvious for a while but it's thrown Frances. The realisation that Zach just sees her as 'one of the blokes' leads Frances to declare she's going to quash her feelings at all costs. Bec visits Tiffany to check how she's doing in the wake of her suicide attempt. Whilst helping her pack up her things, Bec realises that Tiffany's the only one of them holding on to the past.

Bec confronts Matt and demands to know if he really wants to marry her. Meanwhile, Frances's feelings for Zach start to get the better of her. Then, Sophie's lawyer presses her for information to provoke sympathy from the judge, but Sophie keeps certain details to herself.

Bec grapples with her suspicions over Matt's fidelity. Despite trying not to think the worst, Bec finally confronts him. Sophie faces the demons of her past but her increasingly reclusive lifestyle begins to affect her relationships with her friends. After shutting everyone out, Doug finally gets through to her via some harsh home truths. Meanwhile, Frances becomes caught in the middle of Zach and his father, and Jenny gears up for her first date with Rhys.

Bec and Matt's dinner proves to be a night of highs and lows for the four friends as they navigate very different romantic entanglements. Frances still has no clue how Zach feels about her dating his dad, Sophie is worried that Doug is distancing himself from her, and Jenny is falling hard for Rhys, despite opinions about his genuineness. Meanwhile, Bec tries to put the tension from the last few weeks behind them. For one of these women, the end of the night brings a shocking conclusion.

When Bec experiences an emotional breakdown, Jenny and Mrs Gross are there to support her, but it's Matt she really wants to see. JB's frustrated as Sophie negates his attempts to get to know her better. Will Sophie eventually let her guard down? Meanwhile, Frances is left to babysit Jonathan's niece and nephew, and after watching Paul and Zach with the kids, she realises just how different they are. But what does this mean for her relationship with Paul?

As a power failure hits the inner city, two relationships bloom and two unravel. A week after her breakdown, Bec's just getting back to herself when she sees Matt with another woman. Jenny is adamant about impressing Rhys's parents, but Rhys has a secret, and Jenny is devastated when she discovers what he's been hiding. The blackout sees Zach and Frances sharing a bottle of wine and stories about Zach's dad. Meanwhile, Sophie's decided it's time to take her and JB's relationship to the next level.

The girls' worlds are turned upside town when Bec and Doug are involved in a serious car accident.

Despite the horror of the car accident, Sophie is feeling in control but needs to end her relationship with JB, but she's never broken up with a guy before.

Somewhat splintered following the accident, the girls each grapple with their own separate game of real-life charades. Seduced by the lure of popularity and acceptance, Jenny throws herself further into Sean's party world, raising concerns for the Gross family. When Zach's grandparents arrive unexpectedly, Frances discovers he's told them that he and Frances are a couple, and while going along with the act, both are confronted by what feelings come up. Meanwhile, Bec and Doug are determined to take things slow and keep their burgeoning relationship secret — but this proves to be harder than expected.

After Callum inadvertently stumbles upon Bec and Doug's new romance, they're forced to tell Matt and Sophie that they're officially together. Publicly, Matt and Sophie take the news well. Privately, it's another story, which ultimately comes to the surface at Callum's 30th birthday party. While Sophie pretends she's okay with her two best friends dating, she's distracted by her thoughts that someone is stalking her. Meanwhile, Jenny shies away from Callum's bowling party, not wanting to show her face after being humiliated by Sean. Will her friends be able to convince her to rejoin the world?

When Jenny and her siblings notice Mrs Gross behaving in an unusual manner, they discuss the option that she could be menopausal.

Jenny struggles to keep a dark secret from her siblings concerning her mum's health, and Bridget and Wes announce some exciting news.

Zach organises a weekend away with Frances and Jonathan to discuss a strategy for their next big pitch. But with Sophie tagging along at the last minute, work takes a back seat as the foursome enjoy some fun and relaxation. Meanwhile, with Mrs Gross's impending surgery on everyone's mind, the Gross family are struggling, and when Jenny's sister Deidre arrives, disagreements and old tensions resurface. Plus, Doug's surprised to learn that Bec still holds a joint bank account with Matt.

Sophie is forced to face up to her past as she realises her stalker has been someone much closer than she could have imagined.

Mrs Gross's surgery is a success and Jenny is forced to revisit her promise to God that if her mum got better she'd give her money away. Meanwhile, Doug is offered a job in London, but now that Doug's single, Sophie wonders if the timing's right for them to be together. Also, Matt doesn't want to make the same mistake twice and is eager to tie the knot, so when Mrs Gross is given the all clear and Sophie shows her supports for Matt, Bec decides that they should get married tomorrow. But when the time arrives, can they go through with it?

Wedding bells ring as Bec and Matt's happy day finally arrives. Bec struggles to pull it together after her Hen's Night, but once she's in her dress she feels as though nothing could go wrong... Happy with Zach, Frances remains oblivious to Claire's true intentions, and their relationship bliss only fuels her jealousy. Jenny announces she's decided to go to Uni to become a teacher. But what will this mean for her and Callum? And, Not wanting to deter Doug's decision to go to London, Sophie's determined to keep her feelings quiet. But saying goodbye causes her to buckle and finally finds the courage to make a last ditch declaration of love.

Three months after Bec and Matt's wedding, they are dealing with Bec's pregnancy and the paternity of the child. Jenny starts her teaching course at university, while Frances and Zach continue parenting Jasmine. Sophie and Doug are happy, but their relationship is put to the test when Doug learns he is the father of Bec's baby.

The couples are loved-up and looking forward to Jenny's big weekend away but things don't go to plan. There's the issue of Jenny being broke and the bigger issue that she hasn't told the girls. Bec worries about the Matt and Doug dynamic in the confined spaces of a holiday house. Frances' going away plans are snagged before she's even left when Jasmine is nearly arrested. Sophie wants to celebrate becoming a doctor and enjoy her last days of freedom before the grown-up medical world descends. Meanwhile, the Gross's first weekend alone in a long time goes from bad to worse with the arrival of Jasmine, then Bridget and Wes and finally, Nana Dot.

Anxious to make a good impression at her orientation week, Jenny tries desperately to fit in, but her first day dredges up ghosts of high school past and sees her return to her comfort zone — the girls toilets. Bec is horrified by the thought that her Mum and Dad might be dating again, but her dad has a different surprise in store when he introduces his new fiancee, twenty-eight-year-old Brandi. Sophie's excitement for the first day of her medical placement is quickly dishevelled when she's relegated to menial tasks, but when Sophie is faced with a medical emergency, she decides to use her initiative. Meanwhile, Zach's wife Claire turns up on Frances' doorstep to apologise for her past behaviour, but Frances has a feeling that's not all she's there for.

Sophie is keen to take her mind off her upcoming hearing with the hospital board, but in doing so, makes a bad situation worse and must face some uncomfortable truths about her own behaviour. Bec is attempting to do it all, but something has to give and her decision about what to let go shocks those closest to her. When Jenny finds out that her Dad has been made redundant, it magnifies her guilt about spending all the lottery money and she decides to take on a new job managing Lachie's band, but will spending even more time with Lachie impact on her relationship with Callum?

With Sophie and Matt unable to attend the birthing class, Bec and Doug are reminded of the close bond that they shared in the past. Confronted by their intimacy, Matt reveals his true feelings.

It's the annual hospital fete fundraiser, but the fun and games are tainted for Sophie when rival student Spencer accuses her of receiving biased treatment because of her relationship with Doug and also of having bought her way back into medicine. Sophie refutes the claim but faces serious trouble when stolen hospital drugs are discovered in her bag. Bec, Matt, and Doug find themselves debating over the idea of a home birth. Meanwhile, the awkwardness between Jenny and Lachie since their kiss has become unbearable, and Jenny tries to block it out by focusing on the band's first big gig and overcompensating with Callum; however, a psychic reading at the fete puts her on shaky ground. Could Lachie be the one after all?

Lives and futures are on the line as Jenny, Frances and Sophie grapple with choices that could tear their worlds apart.

Tormented by the guilt she's carrying at having cheated on Callum, Jenny is relieved when Rhys makes a reappearance and she is able to get her secret off her chest.

Jenny discovers her actions have had a devastating ripple effect for those she cares for the most.

Seduced by adventurous Cat, Sophie considers life outside of Melbourne, but when she raises the topic with Doug, it is clear his ideas for the future are firmly grounded with the baby.

When Tiffany learns that her ex-husband, Craig, is planning to move their kids overseas, she makes a snap decision that could completely jeopardise her custody case. Jenny is planning the ultimate combined baby shower for Bec and Bridget, and her nerves are hot knowing she has to face Callum's mum for the first time since cheating on him. Jenny's decision not to worry about what other people think has a ripple effect at the party when it convinces Rhys to cast off the fear of public affection that has put Jonathan offside. Meanwhile, when Sophie contemplates applying for a six-month internship in Kenya, she and Doug must face the possibility of an extended separation - and what it will mean for their relationship

Sophie is on edge as she grapples with her impending stepmum role, but when Bec's water suddenly breaks, Sophie is confronted with more than impending parenthood as she is left to deliver the baby.

Jenny is a ball of stress about starting her teaching rounds at Renwood, and visions of Tiffany are doing little to ease her angst. Dot tells her, if in doubt, try a dose of tough love - but when Jenny tries this approach, it only makes the situation worse. Bec tells her to ignore the troublemakers, but this doesn't work either. Finally, inspired by a chat with Bridget, she decides that the best course of action is to become mates with her students.

Bec realises how much effort Matt is putting in to look after her and Harrison and worries he needs a break. But in keeping Matt away, old wounds open, and Matt worries he's becoming a second-class dad.

In Jenny's last week of her teaching placement at Renwood, she discovers the extent to which one of her students is bullying a student.

When Jonathan and Rhys are the victims of a brutal assault, Frances goes on a crusade to obtain justice. In the process Flynn becomes aware of Frances' passion and skill as a lawyer.

Frances' surprise that it will be just her and Flynn in the law practice is soon overtaken by Tiffany's request that Frances take over as her lawyer in the custody hearing; the case starts tomorrow. Despite immense reservations, Frances agrees to help out. Matt and Bec's relationship continues to crumble as Matt emotionally disengages from the marriage. When an egregious claim is made in the courtroom that Matt is having an affair with Tiffany, Bec's doubts surface, and she wonders if there may be any truth to the allegation. Meanwhile, Sophie's declaration that she never wants to get married throws Doug and causes him to wonder if he's wasting time in a relationship that's ultimately going nowhere.

During preparations for her and Doug's engagement party, Sophie begins to feel a growing sense of dread. It builds until Sophie finds herself in the grips of a panic attack. It would appear that Matt and Bec have moved through their recent difficulties and into a loving phase of their relationship. When Bec discovers a forgotten sketchbook, which holds plans and designs for their ideal home, she feels it's the perfect time to finally get their dream house under way. But there is a secret that threatens to shatter Bec's dreams irrevocably.

Jenny feels uncomfortable about asking Glenn to attend the naming day, not wanting to upset Bec and Carolyn. Patrick remains suspicious about Jen's new man, but after a frosty dinner confrontation, he promises to make an effort - and urges Jenny to bring Glenn to the big day. Meanwhile, Frances faces a parenting dilemma when Jasmine asks her permission for Ollie to sleep over. Although confronting and uncomfortable for Frances, she learns that she has every right to be proud of her influence in Jasmine's life.

As Matt and Bec embark on their search for a block of land on which to build their dream home, Bec discovers money is missing from her bank account, and she's devastated when it comes to light who is behind it.

As Jenny renews contact with Callum, Bec and Matt fight for their dream block of land. Bridget is growing increasingly suspicious of Dot's cagey behaviour, especially regarding the bar girl, Sam. Bridget gets to the bottom of the 'truth', but lucky for Dot, she grabs the wrong end of the stick. Meanwhile, Sophie and Frances face unexpected obstacles in their relationships as each of the girls learn the truth about their perfect match. Three couples stand strong at the end of the day, but it may not be who you think.

The girls take 'Saturn return' to a whole new level as their year ends in an astonishing revelation, heartache and a horrific death. After her break-up with Doug, Sophie is handed the perfect distraction when Flynn tells her rebuilding is about to start on the Kenyan medical clinic. He thinks they should go over and be part of it, but Sophie is worried about Doug's reaction. Jenny, blissed out after reconciling with Callum, is further buoyed by news that she's a shoo-in for a part-time teaching position. Life seems too good to be true. It is. Bec and Matt, having just bought a block of land, are seemingly in a great place. But as Bec becomes increasingly concerned about Doug's state of mind, Matt decides that he can't keep his betrayal a secret any longer.