Stormy weather threatens to ground the Pride of Cumbria helicopter high in the mountains of the Lake District while asthmatic patient Jim lies shivering and injured on the cold rocks; in the east the Guardian of the North helicopter struggles to get to 17-year-old Emma whose car has been impaled on a cattle grid severely breaking both her legs. And just when the storms finally abate, the whipped-up North Sea drags a coastguard out to sea then crushes him against rocks, leaving him seriously injured. The land ambulance can't reach him - so his only chance of getting urgent treatment is in the hands of the Great North Air Ambulance. The problem is, the high waves near the patient might be too dangerous for the helicopter to land without bringing disaster on them all.