Mark wants Jeremy to get a job in the same office as him so he can pay his share of the rent, however Jeremy isn't keen on the idea. Mark also worries whether Sophie, a co-worker he fancies, may or may not think he's a Nazi.

Mark and Jeremy go out to a party, where Mark strikes up conversation with a teenage "goth". The three go with Toni to a bowling alley, where Mark embarrassingly runs into Sophie, who's going out with a work colleague.

Mark begins to forge a partnership with his idol, business guru Alan Johnson, and begins to change his behaviour to be more like Johnson. Meanwhile, a displeased Jeremy tries to think back to "the bad thing" he did with Super Hans in a drug-heavy weekend.

Mark is angry at Sophie when she gets promoted for a job instead of him, when she told him she wasn't going to apply for it. Jeremy gets a job at a recording studio, which results in Super Hans having an affair with Toni after he brings her in in order to impress her.

In order to pull Sophie away from Jeff, Mark hacks into her email account in order to find out her thoughts on him. This leads him into going to her "Rainbow Rhythms" dance class. Here Jeremy meets a sexually liberated American girl named Nancy who is determined to break the most bizarre sexual taboos, with the help of Jeremy. However Jeremy becomes jealous when Gwyn, another member of Rainbow Rhythms, begins to attract the nymphomaniacal attentions of Nancy.

Jeremy runs into an old acquaintance from school who he used to pick on but has become successful now and hires Jeremy to make a soundtrack for a film he's making. Mark makes a new friend at work who turns out to hold a fair amount of prejudice. Meanwhile, Sophie spends time with Jeff.

Jeremy wants to get closer to Nancy so he tries to impress her by joining in her volunteer work for the homeless. However, to Jeremy's dismay, Nancy suggests that in order to break the last sexual taboo, they should stop having sex. Mark manages to get Johnson to pick him to go on a business trip with Sophie instead of Jeff, however trouble begins when embarrassing news footage of himself drinking in a public park makes all Johnson think he is an alcoholic.

When Sophie tells Mark that she and Jeff are moving in together, she tells him that Jeff wants her to spend less time with him. In a bid to get past this he tries to become friends with Jeff, but Jeremy ends up getting on with Jeff much better than he does. However, Mark gets Jeremy to reveal information about Jeff talking to other women and uses it to ruin his relationship with Sophie.

Jeremy agrees to marry Nancy in order to make her eligible for a visa, and whilst she insists it's purely an administrative procedure, Jeremy's sure it will be the happiest administrative procedure of their lives. Mark is pleased to see Sophie and Jeff breaking up but finds it hard to make his move and ends up being set up on a date with another woman. A jealous Toni starts an affair with Jeremy.

Jeremy hopes to hold a magic mushroom party in the flat whilst Mark's away for work, but Mark's illness complicates things, and so Jeremy must find some underhanded way to keep him out of view for the duration of the party.

Jeremy is called up for jury duty, and breaks all the rules when he meets the defendant in a café and unwisely starts seeing her. Sophie drags Mark along to a gay club with her friends and he isn't comfortable with it at all, especially when ecstasy starts being handed out.

Both Mark and Jeremy have trouble with Alan Johnson as he assigns Mark to oversee a difficult presentation to the JLB board, while the offer of a real life "indecent proposal" involving girlfriend Big Suze proves too tempting for Jeremy to resist.

Mark and Sophie both return to work after their disastrous wedding day, with Mark determined to "Mandleson" her in proving who should get all the blame. His only sympathizer is new IT girl Dobby, who's looking for something far more adventurous than a USB stick in the stationary cupboard. Jeremy and Super Hans rope Sophie's nephew Barney into their band when they realize he's actually got some musical talent but their gig is destined to end in disaster when Super Hans goes too far with seeing how far they can push Barney.

Mark is fed up with Jeremy and decides to evict him, installing an Australian woman named Saz in his place, hoping she'll become his new girlfriend so he can rub Sophie's nose in it at his forthcoming Birthday party. Jeremy is desperate for money and having exhausted the sperm bank, he resorts to stealing Johnson's credit card.

Jeremy starts working at JLB Credit, however the entire UK division of the company gets shut down by the German head office the same day. Mark forms a group to protest against the firings but really wants to impress Dobby.

Mark invites Dobby to a party at his flat, then has to work out how he'll actually organise it. Meanwhile things have gotten a bit frosty between Jez and Elena but he reckons he knows to handle it so she'll come running back to him.

After Gail's surprise proposal to Elena, they are soon to have a civil partnership, but Jez won't give up that easily. Sophie is also due to give birth and wants Mark to pass his driving test, unfortunately he gets a bad driving instructor.

Mark and Jeremy get trapped in a house on the day of Mark's baby's Christening.

It's New Year's Eve. Mark wants to find Dobby and sort things out between them, Jeremy just wants to have a good time. However newly-single Zahra has invited Jeremy to move in with her.

A month has passed. Dobby has still not said that she will move in with Mark and Jeremy has not said he will move out. Mark invites Dobby round to share a pizza and watch 'The Apprentice' but unfortunately Gerrard, her other admirer, dies of the flu that evening and Dobby feels guilty for not being with him. Jeremy decides to undergo therapy which, after an inauspicious start, he loves. Mark goes for a job with a bathroom fittings company but the final interview clashes with Gerrard's funeral so he has to make a brief oration before leaving. At the wake Mark again asks Dobby to move in with him but she says there is no need as she is now an independent woman, thanks to the money left her by Gerrard.

Jeremy is worried about turning 40 and Mark is running out of time to win over April. How is it all going to end for the El Dude Brothers? Are they going to be alright?

When Sophie tells Mark that she and Jeff are moving in together, she tells him that Jeff wants her to spend less time with him. In a bid to get past this he tries to become friends with Jeff, but Jeremy ends up getting on with Jeff much better than he does. However, Mark gets Jeremy to reveal information about Jeff talking to other women and uses it to ruin his relationship with Sophie.

Both Mark and Jeremy have trouble with Alan Johnson as he assigns Mark to oversee a difficult presentation to the JLB board, while the offer of a real life "indecent proposal" involving girlfriend Big Suze proves too tempting for Jeremy to resist.

Mark and Jeremy get trapped in a house on the day of Mark's baby's Christening.

Jeremy runs into an old acquaintance from school who he used to pick on but has become successful now and hires Jeremy to make a soundtrack for a film he's making. Mark makes a new friend at work who turns out to hold a fair amount of prejudice. Meanwhile, Sophie spends time with Jeff.

After Gail's surprise proposal to Elena, they are soon to have a civil partnership, but Jez won't give up that easily. Sophie is also due to give birth and wants Mark to pass his driving test, unfortunately he gets a bad driving instructor.

Jeremy agrees to marry Nancy in order to make her eligible for a visa, and whilst she insists it's purely an administrative procedure, Jeremy's sure it will be the happiest administrative procedure of their lives. Mark is pleased to see Sophie and Jeff breaking up but finds it hard to make his move and ends up being set up on a date with another woman. A jealous Toni starts an affair with Jeremy.

Jeremy starts working at JLB Credit, however the entire UK division of the company gets shut down by the German head office the same day. Mark forms a group to protest against the firings but really wants to impress Dobby.

Mark wants Jeremy to get a job in the same office as him so he can pay his share of the rent, however Jeremy isn't keen on the idea. Mark also worries whether Sophie, a co-worker he fancies, may or may not think he's a Nazi.

A month has passed. Dobby has still not said that she will move in with Mark and Jeremy has not said he will move out. Mark invites Dobby round to share a pizza and watch 'The Apprentice' but unfortunately Gerrard, her other admirer, dies of the flu that evening and Dobby feels guilty for not being with him. Jeremy decides to undergo therapy which, after an inauspicious start, he loves. Mark goes for a job with a bathroom fittings company but the final interview clashes with Gerrard's funeral so he has to make a brief oration before leaving. At the wake Mark again asks Dobby to move in with him but she says there is no need as she is now an independent woman, thanks to the money left her by Gerrard.