Documentary following Alex Macdonald who, for 40 years, has stalked deer through the hills and glens above Fort William, in the same way his father, grandfather and great-grandfather did before him. Now he wants to hand his expertise on to his 15-year-old son. In this intimate portrait of a unique way of life, the programme follows Alex through the ferocity of one of Scotland's worst winters to the high heat of summer as he manages the 3,000 red deer that populate the Achnacarry estate.