Sharon and Tracey witness a friend of their husbands', Vinny Hutchins, making a speedy getaway from a post office raid in which a pensioner has been injured. While Tracey wants to turn him in, Sharon vehemently disagrees as it's against criminal ethics. After visiting Darryl and Chris, they change their minds. When Dorien is round, they see an appeal on 'Crime Busters' and Dorien recognises Vinny. Sharon and Tracey, after hearing about the reward money, decide to tell the police but Dorien rings first, and uses the money to buy a kitchen from her toyboy Luke, who has been threatened with a move to Northern England unless he sells more kitchens. Tracey, however, blackmails Dorien to give her the kitchen so Vinny's wife can sell it to fund a new life abroad.
Sharon is approaching her 30th birthday but is unable to see a bright future ahead of her—merely one which matches up to her past. Tracey would like to throw a party for her, but has problems with the guest list when she realises that their successful friends with families will only remind Sharon of ""all the things she hasn't got.""
Inspired by Dorien taking her antique silver samovar to the Chigwell Antiques Roadshow, Sharon and Tracey decide to search through their mother's belongings for their own undiscovered treasure. Unfortunately, their search yields more than they could ever have bargained for. Perhaps Aunt Sylvie can shed some light?
Sharon is about to go on the dating show, Second Time Lucky, and wins, so she visits Chris to discuss their divorce. But when Chris asks her for her help to pay off a gang who Chris indebted to, she must choose to go to Germany for her prize in order to bring back a German car that belonged to Chris. Tracy accompanies her to Berlin, where she helps find a mechanic who can fix up the car. Trouble is, Tracy takes a shine to the mechanic. Meanwhile, Dorien is told by Sharon that she saw Marcus at the airport with another woman, so Dor moves out... right into next door.
When a man, Charles Fitzroy, knocks on the door one evening asking for some water for his car, Sharon tells him all about Dorien and her relationships, which he seems interested in. After visiting Chris in prison, Sharon suspects that Charles may have been a police spy interested in the proceeds of Darryl and Chris' crimes. Soon after two policemen come round and they ask about the whereabouts of Dorien and Marcus, who needs to be questioned about a major fraud case of which he was the accountant. Sharon tells them they are on holiday in Zurich. When Dorien returns she finds that a Sunday newspaper has an article on her private life, and Sharon and Tracey feel guilty.
Sharon bumps into Dave, her ex-boyfriend from shortly after the boys were sent down. This brings back all the feelings she had when she had the abortion with Dave's baby. But now she feels ready to settle down, and Dave could be just the right man. All she has to do is tell him that she never had a miscarriage. Meanwhile, Tracy gets all motherly when Garth comes home for the weekend.
Darryl's parents, Les and Olive Stubbs, get into touch for the first time since his trial. Despite always hating them, Tracey invites them round for dinner. Dorien insists on coming round for the evening and helping with the cooking - although it later turns out she did this as she was expecting a boyfriend to call her on their number. A few days later Les and Olive write a letter to Darryl saying that Tracey's house is depraved and he suggests they move their from the prefab in Poplar. Tracey and Sharon are horrified by this. When Darryl's parents and Tracey all visit him in prison, an argument soon occurs and he finds out what his parents are really like.
With money tight, Sharon has taken a job, but Tracey seems reluctant to follow, despite Sharon and Dorien's encouragement. Tracey admits to having little confidence, having never been allowed to work during her marriage, but Sharon volunteers her to do some voluntary work for Siobhan, the editor of the prisoners' dependents newsletter. Sharon then goes with Tracey when she goes to apply for a receptionist job but is worried about the application form, which makes her realise how few qualifications and little experience she has. Sharon gets the job by lying on the application form.
It's Thursday night. Dorien's date has been cancelled, and Sharon and Tracey are bored. When the VCR blows up, Dorien generously offers to pay for an activity weekend for the girls. Sharon is unsure about the activity on offer which is hang gliding, later it turns out Dorien has had an accident so the activity weekend is cancelled.
Dorien suggests a car-boot sale, and the girls are keen - Sharon can get rid of some of Chris's old stuff, and Tracey will sell things that son Garth has outgrown. However, while clearing out possessions, an old photo is found with Darryl at a party, under the table with someone else. Sharon is chucked out of the house by Tracey for keeping it a secret.
Chris and Darryl are temporarily in Albany prison on the Isle of Wight. Sharon cancels her visit for Dorien so she can interview Chris about sexual deprivation for her OU dissertation. But while Dorien becomes the centre of attention, Tracey becomes a victim of food poisoning after eating at a motorway cafe.
Sharon warns Tracey that her son will be a "mummy's boy" if she isn't careful. Sharon has also taken to dressing up and going out a lot, claiming she is going for job interviews. In fact, she is having lunch with the up-market Mark and they're now on their sixth date. However, her hopes of happiness are dashed when discovering Mark is an over-grown kid controlled by his mother.
Sharon and Tracy are given the use of a holiday villa in Majorca by an old friend of the boys. Garth, who's working for Dor's husband, manages to get them and Dor free tickets over there. But he fails to mention why. That becomes obvious, when they step into the villa and see Daryl and Chris, who have escaped from jail while doing a music performance.
Sharon wants a man and submits a video tape of herself to a video dating agency. She meets laddish Mike,who takes her to a Rolling Stones concert and claims to know all the big names in rock but is exposed by Garth. Tracey thinks Sharon would be better off with shy,stammering Jimmy and organizes a meeting but she had forgotten that Dorien had also submitted a tape.
Auntie Sylvie,just out of hospital,comes to convalesce with Tracey and Sharon and proves to be very demanding,as well as encouraging Garth to buy a motor-bike against his mother's wishes. They consider putting her in a home but feel unable to go through with it though fortunately she has a mind of her own.
After Darryl comments that she has put on weight Tracey goes on a diet,suffering but losing ten pounds in the process, but when she goes back to see Darryl he is now worried she looks too alluring and needs her reassurance. Dorien cannot fathom why Brett,her hunky young builder,does not want sex with her and assumes he is gay but Sharon gets to find out otherwise.
Dorien is depressed because she has reached the menopause but hormone replacement treatment soon puts the smile back on her face. Tracey is annoyed because she feels Darryl fails to give Garth sufficient praise but all is sorted out on a visit. But can Sharon and Chris' little problem, his infertility, be solved by adopting a Bulgarian orphan?
When the case against Darryl's associate Trevor Mimms is thrown out of court due to unreliable evidence from Inspector Tatum - who arrested Darryl and Chris - the sisters wonder if their lads might have been fitted up by Tatum and start a campaign to free the Chigwell Two. Tracey goes on daytime TV and finds a lawyer to fight the case but she comes to realise that she may be kidding herself. Dorien is unsympathetic until Marcus is arrested as a suspected drugs baron. When Trevor gets sent down for another robbery the sisters realise the truth but he does give them a Christmas bonus,as do Tatum and,after Marcus' name is cleared, Dorien.
Dorien tries, and fails, to sell her unwanted furniture, and Sharon badgers Tracey into giving her driving lessons; after one of Sharon's disastrous driving tests it doesn't take long for Tracey's nerves to go bad. Eventually, Sharon's driving errors lead to her crashing into the van taking Darryl and Chris to a new prison, and the girls are suspected of organising a jail-break - before making the joke spot on the news.
Tracy and Sharon are now living in their new house, as Dor comes to visit after her recent trip to Monaco. She comes back with the news that she slept with Ralph Gardener, head of Central Water, who is currently all over the media. She comes up with the plan to cash in by making up a story about being pregnant. Meanwhile, Sharon decides that she wants to have a baby, and gets Dor to hook her up with someone, while Tracy is completely against both of their plans.
The heavily pregnant Tracey is fed up with Sharon's slobbish habits - in particular her tendency to leave all the kitchen drawers open. But Sharon insists she didn't leave them like that, and when things start to go bump in the night, Tracey becomes convinced they're sharing the house with a poltergeist; thus, the girls and Dorien hold a seance.
Now that Sharon has given up work, Tracey is the only one in the house bringing in a wage, and it's not nearly enough to pay the bills, so Dorien kindly offers to dip into her savings to help out. However, when she calls the bank it emerges every penny she had has been spent on legal fees. In desperation, the sisters take their old friend to a car-boot sale and sell her beloved collection of designer clothes, right down to the shoes on her feet - which are snapped up by former TOWIE star Amy Childs.
Tracey can't ignore the fact that Garth and Marcie aren't getting any time alone - so she decides to change the bedroom arrangements to give them space and privacy. After failing to sleep in the lounge, Sharon tries to bed down in the loft, where she makes a discovery that might solve all their problems.
Sharon and Tracey get a glimpse of a possible future when they see two elderly sisters in the supermarket and it worries them. Dorien's court case comes to a conclusion – but what will the verdict be?
Sharon amazes the others when it turns out that she has a high IQ, and Dorien, under pressure to find a heroine for her next book, decides to push her towards a surprising career. Tracey however, has got her hands full with a despondent Garth, but the household joins forces to put Sharon through her paces and make sure she is the man for the job.
Tracey’s ex-husband dies and she has to decide what kind of a send-off to give him. Sharon wants the funeral to be right for her boys, Dorien’s got the perfect outfit, and Chigwell’s criminal fraternity want to make it extra special.
Tracey’s house has been burgled during Darryl’s funeral. The family decide it’s up to them to track down their possessions and set out on a trail involving a snooker club, a pawnbroker and the infamous Theydon Boys drag club.
Sharon’s disapproval of Tracey dating policeman Barry and apparently overlooking Garth’s feelings for his dad lead to a major quarrel between the sisters. Is it one that Dorien, in her new role as Agony Aunt for GetA-Life Magazine, can solve?
Tracey’s had enough of Dorien entertaining gentlemen callers and Sharon not bringing in a living wage, and throws them both out. Holed up in Sharon’s old bedsit, the two of them take a united stand…or do they?
Auntie Vera’s got problems with her hips and her block’s defective lifts and tells Sharon and Tracey she’s moving in with them. But Tracey’s only got one room available: it’s Dorien’s… and Dorien is dismayed to be told that family comes first.
A surprise visitor in the form of the attractive Emma turns up at Tracey’s house. Sharon’s suspicious, Tracey is welcoming, and Dorien is shocked to the core. Travis, on the other hand, is over the moon.
Travis has serious school news that he’s scared to break to his mum. Sharon decides she’ll pass herself off as Tracey and sort out his problems, but her efforts land the family in a mess that only arch-seducer Dorien can get them out of.
Sharon and Tracey suspect that Dorien is fast approaching “The Big Seven 0”, and decide that, whether she likes it or not, the event calls for celebration.
At the end of a 2020 no-one could have predicted, we catch up with the inhabitants of our favourite Essex address... and find big changes in all their lives. Tracey and Dorien have been getting right on each others' thruppennies, while Sharon has escaped to the other side of the world and is stuck on a Covid-cruise... Who can fill the Sharon-shaped hole in their lives this Christmas?