The sordid secrets of Matthew's days alone in the flat are revealed, as he attempts to date a pizza delivery girl and delves into his personal video collection.

Jason manages to persuade Matthew to go out to the park and, later, to a gym. WhenMatt shows Marco a video of Mandy having sex, Marco realises that she isn't a virgin and decides he's no longer interested in her. Meanwhile, Martin has become very insecure about his relationship with Clare. A combination of paranoia, jealousy and drink leads him to make a complete fool of himself. Matt finally manages to go out on his own, on a trip to a local shop. Unfortunately, the shop is raided by a masked gunman, so Matthew decides that he'll never go out again!

Martin realises that Clare left him because he's boring. He starts a voluntary job, working for a telephone helpline for distressed people. He gives his home phone number to Tesni, one of the helpline's clients. She rings the flat while Matt is at home alone and, thinkng that Matthew is Martin, she threatens to commit suicide unless he visits her home. Matt goes round to see her but, when he gets there, he collapses and has to be rushed to hospital. Martin arrives at the hospital, looking for Clare. Mandy also turns up, with her latest boyfriend. Matt meets a red-haired student named Susie and falls in love with her.

Matt ventures out of the flat to join a band.

Mandy is visited by her old boyfriend Stoat. When the flatmates discover that he's escaped from prison, Stoat ties up Matthew, Martin, Jason and Clare. He takes Mandy into her bedroom and they end up having sex. Mandy ties Stoat to the bed and gets his gun, then releases her friends. Clare tells Matt that Jason is gay. Jason leaves and Clare dumps Martin.

Mandy is thrilled to receive a job offer from a renowned author until she discovers the work entails researching a rather intimate part of his body. Meanwhile, Matthew arranges a very personal surprise for Martin's birthday present.

Matt has spent hours waxing his surfboard that will probably never see the sea again! Martin is desperate for a girlfriend, Mandy is dating a boxer, Matt reckons he could have him in a fight, but it's obvious Matt is intmidated by him.

Martin is very depressed about the end of his relationship with Clare; Mandy has a close encounter with Brian Kennedy, a lecturer from her old university; Martin and Mandy find out what Matthew has been writing in his secret journal.

Mandy has to cook dinner for Archie's mother and sister and she's getting worried about it. Martin drives Matt crazy going on and on about baby Rosie. Clare tells Martin that she can't see him as a proper father because he's not much better than a vegetable. Mandy wants to cook some crabs, but they're still alive and she can't manage to kill them. It looks as if the dinner party will be a total disaster. She gets drunk and passes out, leaving Martin to prepare the meal using some of his mother's frozen meals. Archie's sister Lulu gets the idea that Rosie is Martin and Mandy's baby. Mandy unwwittingly reveals details of her past to Archie's mother, who threatens to tell Archie. Clare tells Martin that she's planning to emigrate to Australia. Archie tells Mandy that he doesn't mind about her past.

Martin gets a postcard from Clare, telling him that she's married Shane in Australia. Everyone is preparing for Mandy's wedding. Archie has been set a series of "challenges" by his ex-marine chums, in preparation for his marriage. Matt has been persuaded to go to the wedding. Martin goes to Mandy's hen night and meets a girl named Rachel, who's "almost exactly like Clare" (except that she isn't Irish, she isn't a nurse and her hair is the wrong colour). He arranges a date with her, during which he gives her a wig (similar to Clare's hair) and asks her if she'll speak with an Irish accent. On the morning of the wedding, Martin gets a phone call telling him that the wedding limousine isn't available. He borrows an old Nissan and drives Mandy to the church. Matt travels in the boot. When they arrive, there's no sign of Archie. Then the best man arrives and tells Mandy that Archie has been killed in a car crash. She drives off at high speed, saying that she intends to crash the car and kill herself. Martin isn't keen on the idea, for obvious reasons, and manages to talk her out of it. When they get back home, Martin gets a phone message from Rachel. She says that he's a "weird, twisted pervert" and she doesn't want to see him again. Apparently this reaction was caused by the nurse's uniform he'd given her as a present. Mandy learns that Archie was killed trying to meet his final "challenge" - to get a speeding ticket on the way to his wedding.