When Roz Chen's wife, Niamh, is killed in a hit-and-run on a lonely Tasmanian road, the grieving widow begins to wonder if Niamh's death was an accident after all. Meanwhile, SAS veteran Sam Willard is hoping for a fresh start with a job at a salmon farm. But as allegations of old war crimes surface and Sam is 'promoted' as a special operative against anti-salmon farm activists, he and Roz form an unlikely alliance. Forced to retreat into the unforgiving Tasmanian wilderness, Roz and Sam find themselves scrambling for the truth with murderous thugs on their trail.