Plot Summary:At Royal Papworth, 54-year-old Shelley undergoes one of the most complex and extraordinary operations imaginable - a pulmonary endarterectomy. At Addenbrooke's, a new procedure has been devised to help cancer patients with weakened bones.
Cameras follow surgeons, anaesthetists, theatre staff and patients at the Queen Elizabeth Hospital Birmingham's surgical unit, where surgeons push medical boundaries to the limit.