Paul Murton's loch-hopping journey across Scotland reaches the quiet lochs of the Borders, where he learns dog handling techniques at a school for sheep dogs, and then heads to some man-made lochs in the Moorfoot Hills, where he hears tell of hidden treasure. Then, in Edinburgh he discovers the story of a Dutch-speaking Scottish minister on skates and goes in search of a lost river and two long-vanished lochs in the heart of the city. Crossing the Firth of Forth, Paul travels around the industrial lochs of the old Fife coal field before walking in the footsteps of Mary, Queen of Scots on a haunted island in Loch Leven.