Tora Hamilton (Radha Mitchell) is an obstetrician who moves together with her husband, Duncan (Rupert Graves), to the remote Shetland, 100 miles off the northeast coast of Scotland. Deep within the soil around her new house, Tora finds the body of a girl with runes carved into her skin and a gaping hole in her chest where her heart once was. Neglecting warnings to leave the body alone, Tora uncovers frightening connections to an ancient legend.