Retired naturalist and wolf expert Russell Core (JEFFREY WRIGHT) journeys to the edge of civilization in northern Alaska at the pleading of Medora Slone (RILEY KEOUGH), a young mother whose son was killed by a pack of wolves. As Core attempts to help Medora track down the wolves who took her son, a strange and dangerous relationship develops between the two lonely souls. But when Medora's husband Vernon (ALEXANDER SKARSGARD) returns home from the Iraq War, the news of his child's death ignites a violent chain of events. As local cop, Donald Marium (JAMES BADGE DALE), races to stop Vernon's vengeful rampage, Core is forced on a perilous odyssey into the heart of darkness.