2017 is the 80th anniversary of the 999 system in the UK, police , fire and ambulance, unlike any other emergency based series. This captures the entire process from the moment a call is taken at control to the deployment of emergency vehicles, multiple crews on the ground 24/7, captures in a unique way issues that face Britain today, this is the job seen through the eyes of those at the emergency front line. Raw and un-mediated, compassionate, yet tough minded. This is Britain in extremis.