Documenting what happens during a 24-hour period in the accident and emergency department at St George's Hospital in south-west London, one of Britain's busiest hospitals. The programme captures both the joy and heartache experienced by the patients and their families, as well as the staff's hard work, professionalism and determination. The series provides an intimate and powerful look at life and death on the front line of the A&E department, a place where stories of life, love and loss unfold every day.