When a 999 call comes in reporting that 67-year-old HGV driverBikkar has suffered a cardiac arrest, Dr James Rait andparamedic Joe Epton are immediately dispatched. In Hillingdon,Dr David Metcalfe and Critical Care Paramedic Lia Brown race tothe aid of 44-year-old John who has burns to his head, arm andhand after lighting a bonfire with petrol.