In the mid-1980s, the GAL, a Spanish paramilitary group, pursues and assassinates members of the terrorist gang ETA who have taken refuge in the sanctuary they have created in the south of France. Grégoire Fortin, advisor to the French Minister of Justice, and Domingo 'Txomin' Iturbe, leader of ETA, are forced to negotiate in order to find a solution to the violence that plagues the region.