The return of the documentary following the work of medical emergency teams in the A&E department of Barnsley Hospital. Sister Vicky has the job of keeping patients and staff cool on the hottest day of the year, and while an emergency delivery of ice pops provides temporary relief, the heat is taking its toll on the hospital generator. Fifty-year-old Michael is brought in after collapsing at home and his family are worried he has had a seizure, but Dr Blanchard has another theory after examining his blood tests