In this programme, the Merit team - a specialist resource reserved for the most serious cases and with a doctor and specialist paramedic on board - is dispatched to the scene of an accident in Warwickshire, where the young driver requires a lifesaving procedure. In the busy control room, call assessors Rowena and Sally deal with suicidal patients on the phone, while crewmates Jo and Suki suddenly find themselves with several more patients when a car crashes in front of them as they are en route to hospital. And as the weekend shift draws to a close, the crew find themselves most concerned about an elderly woman living alone.