Barnsley Hospital's casualty department is in the middle of one of the worst storms in decades. Nurse Chloe treats 88-year-old Enid, who has been knocked over by high-speed winds and has a severe open head wound. She needs to assess Enid quickly in case she's suffered a head trauma. Meanwhile, consultant doctor Mason and registrar doctor Staunton meet 44-year-old Darren. He has been rushed in suffering from severe chest pains and a rapid heartbeat