Mandy's wedding day dawns, and nerves are fraught in the flat; she tries to make up her mind before she reaches the church on whether agreeing to marry Archie was the right decision.
Matthew falls for Laura, his beautiful neighbor, while Martin consults a lawyer about custody of baby Rosie.
Archie's mother and sister go to dinner with Mandy, Martin and Mathew; Clare drops a bombshell.
Matthew decides to join the marines; Mandy and Archie face an embarrassing problem.
Martin gets a shock when he bumps into Clare; Matthew becomes obsessed with X-rated videos; Mandy goes on a date with Archie.
Mandy is deeply in debt, but has a new job and a rich boss; Martin is still obsessed with his ex-girlfriend; Matthew has taken up palmistry to impress girls.
Martin tries to be less boring to win back Clare.
Martin is still very depressed about Clare; Matt is writing a secret journal; Mandy meets a lecturer from her old university.
Mandy's celibate period is tested when old flame Stoat shows up.
Matt's friend Jason helps him deal with his agoraphobia, but Matt doesn't realize that Jason wants them to be more than friends; Marco realizes that Mandy isn't for him after seeing her in action.
Mandy has given up promiscuity in favor of celibacy, but her Italian tutor gets confused; homophobic Matt is introduced to gay Jason.
Mandy decides to give celibacy a go; Martin finds himself a girlfriend; Martin hopes he can keep his girlfriend away from Matthew's bedroom.
Driven mad by the noise from upstairs, Matthew finally forces himself out of the flat and ends up becoming the lead singer in a rock band.
Mandy has a date with a famous boxer; Martin goes out with an exotic American girl and finds that he's forgotten something important; Matthew stays at home with his surfboard.
Mandy considers the chance of a job in Bermuda; Matthew thinks of some interesting ways for Mandy to pay him the back rent.
Martin decides to change his life by moving out and becoming a teacher; Mandy gets bored of her relationship after it lasts a whole week; disaster strikes.
Matthew is up to something while Martin and Mandy are at work.
Mandy dreams of a high-powered career; Martin and Matthew confine their thoughts to another kind of working girl.