An episode following the stories of fathers and sons and the bonds between them. John is rushed into St George's with a life threatening abdominal aortic aneurism. As the doctors work out whether they can save the 77-year-old's life with emergency surgery, his only son discusses the prospect of losing his father. Elsewhere, cameras follow Jamie, whose motorbike collided with a car on a motorway slip road on his way to work, and carpenter Noel arrives in A&E after partially amputating his thumb.