Episode 1

An air ambulance, paramedics and fire crews are dispatched to 49-year-old Paiwand, a pedestrian trapped underneath a lorry in south London, and race against time to treat his crush injuries. Thirteen-year-old Alicia has a large gaping wound on the back of her leg after crashing an electric scooter into a lamp post. Ralph, an 84-year-old with a broken femur, faces complex surgery with a 50-50 chance of survival.