As Jeff's 30th birthday approaches, his new boss Julia Davis questions the girls about whether one should kiss a junior work colleague, while Jeff admits to the lads that he had a close encounter of the Nat (Nose Avoidance Tilt) kind in a stationery cupboard at work.

Steve and Susan's relationship is drifting into a new phase. They are beginning to get on each other's nerves. A bizarre set of misunderstandings brings on a crisis.

Jane finds herself competing with the Supreme Being of the Universe and she feels it isn't fair on either of them. Jeff finds himself in the middle when he has to decide to cheat his girlfriend Julia with Wilma or not.

Jeff is still trying to decide whether he should cheat on his girlfriend Julia with Wilma, or not. While his friends try to help him, Jeff is no match in this debate for "devil woman" Wilma. She knows every argument that Susan (the expert in getting her own way) has ever used. Jeff paints himself into a terrifyingly extreme conversational corner, until he blurts out that the reason he can't have sex with Wilma is that his girlfriend is dead...

Steve is troubled by a blemish on his bottom, which Susan hasn't noticed. James remembers where he knows Susan from. Jeff and Julia try spicing up their love life, but he loses the key to the handcuffs. Then Julia's chunky ex-boyfriend calls round, and he has to pretend that they're not a couple.