Tasmania, 1929: Ten-year-old-twins Tom and Harry Abbott are orphaned by a tragedy that shocks Hobart society. They find sanctuary with their reclusive grandmother, growing up in the remote and rugged Binburra ranges - a place where kind-hearted Tom discovers a love of the wild, Harry nurses a growing resentment towards his brother, and where the mountains hold secrets that will transform both their lives. The chaos of World War II divides the brothers, and their passions for two very different women fuel a deadly rivalry. Can Tom and Harry survive to heal their rift? And what will happen when Binburra finally reveals its astonishing secrets?