Denmark, 2014. A former police officer asks Carl Mørck, head of Department Q, to find out who brutally killed his young twins in 1994. Although a local inhabitant confessed and was convicted of murder, Carl and his partner Assad soon realize that there is something in the case resolution that is terribly wrong.

The five days when Copenhagen was held in a panic grip by an intelligent activist and former elite shooter, who takes to arms when a woman journalist writes about the government’s broken promises in an environmental question.