Adam and Rachel learn that their house is auctioned, but they can't afford it. On her way to the auction, Rachel gets in a car accident and her friends gather at the hospital.

Adam and Karen's new living arrangements cause chaos for their family when an unexpected visitor tips them over the edge. Elsewhere, David embraces his new role but faces humiliation from a former adversary, while Pete's time on a jury has unexpected consequences for Adam.

Adam, Karen, Jenny, Pete and David are saying their goodbyes to Rachel. The whole gang is grieving differently, and they all visit Portmerion to spread her ashes. Jo and Ramona have a collision. Robyn meets some new people and David is making a final decision. Everybody is moving on with their lives.

Adam and Rachel wage a territorial battle over whose place to move into; David and Karen hire a nanny and differ over the issue of having another baby; as Pete and Jenny anxiously await the birth of their first child, Pete's meticulous planning comes to pieces when he mislays his mobile phone.

David seeks sexual advice from Adam, saying that Karen just doesn't arouse him anymore; Pete seeks to resume intimacy with Jenny now that their baby has been born.

A meeting with a famous and handsome author, who wants her to edit his new novel, tempts Karen with thoughts of adultery; Adam is inspired to resurrect an old novel he was writing; and Pete's controlling parents make a visit.

Tired of Adam's preoccupation with a glamorous female neighbor, Rachel decides to baby-sit for Pete and Jenny, who need to get out so that they have something to talk about besides the baby. Meanwhile, David and Karen decide to see a marriage counselor.

David and Karen invite the other couples to a black tie charity dinner where David spends the evening networking, but Jenny gets drunk and starts a fistfight with his female boss. Meanwhile, Rachel reveals a secret to Karen.

Adam has not heard from Rachel for six months and is feeling broody. Jenny and Pete's marriage seems to be in trouble.

David opts to stay home and take care of his son rather than get a new job. Rachel comes back without a baby. Pete learns that Jenny no longer loves him.

Rachel returns to her old job and starts dating a younger man. Pete and Amy find solace together. Jenny convinces Adam to reply to a lonely hearts ad.

Karen has a midlife crisis, smoking dope, getting a tattoo, and shocking David's friends in the process. Jenny finds out about Pete's affair with Amy.

David's younger brother Nick visits and has a fling with Rachel. Adam discovers that he has testicular cancer which prompts Jenny and Pete to give their marriage another go. Rachel tells Adam how she really feels about him.

The three couples spend the millennium on Holy Island. David is upset to find that no-one likes him. Adam and Rachel plan their future.

The gang is reunited when Adam turns up in Manchester to announce his impending marriage, but not everyone is as thrilled as he is. Without the blessing of his friends and family, Adam begins to have doubts.

Adam reveals that he has changed his mind about starting a new life in Singapore as his son needs him in Manchester, while David continues to try to impress Adam's father-in-law. Jenny and Pete's money worries have taken a toll on their marriage and particularly their sex life, leading Jenny to remind him of the bedroom fantasies they used to act out when they were younger. However, when even that fails to do the trick, the attentions of a client at work leave her flattered - but would she ever cheat on her beloved husband?

When David is woken in the early hours by the police, he assumes that something terrible has happened to one of the kids. Relieved to hear that this is not the case, the rug is pulled from under his feet when he finds himself under arrest.

David's wife turns against him. Pete receives another blow. Jen's facade finally begins to slip. Adam worries when his wife becomes increasingly distant.

Wedding bells ring for one of the gang, while Jenny and Pete can't get enough of each other, until some unexpected news sends her into a tailspin. Meanwhile, David and Karen lock horns when it comes to parenting, and Adam hears some hurtful home truths.

Adam begins a journey of self-discovery that opens his eyes, as well as his heart, while Jenny grapples with her secret, and Pete is preoccupied with helping the troubled Evan. David struggles with being a kept man since Nikki's windfall, and Karen prepares for the twins' 18th birthdays.

As the gang heads off to a music festival, Jenny is determined to make the most of it, but Pete is suspicious of her erratic behaviour. David enjoys the perks of festival life a little too much, while Adam and Karen discover that reliving their youth has its consequences.

Jenny's secret is finally out and the gang rallies round to support her, while David's situation goes from bad to worse, but he is too proud to ask for help. In a desperate attempt to prove their kiss meant nothing, Karen sets Adam up with her illustrator friend Caitlin. Starring James Nesbitt, Hermione Norris, John Thomson, Fay Ripley and Robert Bathurst, with Eve Myles and Paul Kaye.

Adam and Karen are enjoying the excitement of their fledging relationship, but are all too aware that their secret will need to come out sometime; David befriends the owner of a local café, Mary, and ends up helping her out of a chaotic lunchtime rush; and Jenny heads for a chemotherapy session and gets some heartbreaking news.

Adam finds himself in hot water at work, while his relationship with Karen continues to affect the group. Jenny's finished her cancer treatment, but her struggle is far from over. David begins to see Mary in a new light.

Rachel and Adam are desperate about the adoption's agency decision regarding Laura. Pete develops first interests in his new house guest and Karen returns to work and is surprised in her new boss.