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.

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.

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.

Mark's promotion bolsters his confidence, he's getting closer to Dobby through a shared love of fantasy role-playing game and Sophie's ready to annul their marriage - but a drunken one night stand has life changing consequences. Jeremy decides that his life is going nowhere and joins a cult, which gives him a new outlook on life completely. With Mark and Jeremy's lives moving in different directions is this really the end of the El Dude brothers?

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.

Jeremy finds out that Elena is already in a relationship, but with a woman. This turns him on and he continues seeing her. Johnson invites Mark to join his new management consultancy firm, but Mark starts to question his faith in Johnson.

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.

With Jeremy still refusing to apologize for falling in love with Dobby, he and Mark are still not on speaking terms six months later. However, the two must put their differences aside to celebrate with a newly-clean Super Hans.

Though April is back with husband Angus Mark still pursues her, taking drugs with her but unwittingly attracts Angus as a friend. In order to impress Joe that he is a life style coach Jeremy rents expensive office space but regrets it when he sees the interest he must pay Mark for the loan and colludes with Super Hans to rob Mark's bank. When the robber backs out however Mark rather wishes he hadn't.

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?

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.

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.

Jeremy finds out that Elena is already in a relationship, but with a woman. This turns him on and he continues seeing her. Johnson invites Mark to join his new management consultancy firm, but Mark starts to question his faith in Johnson.

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.

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.

Though April is back with husband Angus Mark still pursues her, taking drugs with her but unwittingly attracts Angus as a friend. In order to impress Joe that he is a life style coach Jeremy rents expensive office space but regrets it when he sees the interest he must pay Mark for the loan and colludes with Super Hans to rob Mark's bank. When the robber backs out however Mark rather wishes he hadn't.

With Jeremy still refusing to apologize for falling in love with Dobby, he and Mark are still not on speaking terms six months later. However, the two must put their differences aside to celebrate with a newly-clean Super Hans.

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?

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.