Morag Macleod lives on the hill above Loch Ness. Everyone thinks she is a witch because of the strange things that have happened since she went to see the monster rise. Everyone believes it was she who managed to raise Nessie. Only Torquil, who lives behind Morag's cottage, knows better. A young boy, a trapper, and a witch each discover the existence of the water sprite's secret cache of pearls in the depths of Loch Ness in the Scottish Highlands.