A grieving mother works at a factory that manufactures ammunition. After her son is killed in Afghanistan, she makes a shocking discovery. The very bullet that took his life was produced at the same facility where she earns her living. Stricken by grief and fury, she decides to take matters into her own hands. No longer content to mourn, she embarks on a dangerous personal mission. Her goal is to track down everyone responsible for the chain of events that led to her son's death. What follows is a relentless pursuit of justice and revenge, as a mother turns into a hunter.