After a freak accident, experienced caver George Linnane was left with multiple life-threatening injuries within Britain’s deepest cave system. This drama documentary set in the Brecon Beacons tells the story of his remarkable 54-hour-long rescue. With George’s life hanging in the balance, a team of over 300 individuals came to the rescue, from Wales and across the UK, to try and save his life and bring him safely to the surface.