Charlotte is attending a medical conference at a plush resort, something of a brief, Clayton's holiday, which she was not expecting to impact on her in any significant way. Her world shifts on its axis though, when she finds herself responding to the cheeky advances of a very likeable and attractive paediatrician, Spence. By the end of the conference Charlotte is questioning aspects of herself which she has, for a very long time, felt certain about. Nelson has been wrestling with some tough decisions, but decides to stay with Kerry and not go to the Northern Territory. A 37-year-old woman presents Jack and Dan with a medical mystery when she's admitted with a first-ever, and very severe, asthma attack. What's triggered the attack proves to be elusive and the search isn't helped by the patient being unhelpful at times. There's surprise all round when the real cause of the asthma is finally uncovered.