In the days following the surrender of Germany in May 1945, a group of young German prisoners of war is handed over to the Danish authorities and subsequently sent to the West Coast, where they are ordered to remove the more than two million mines that the Germans had placed in the sand along the coast. With their bare hands, crawling around in the sand, the boys are forced to perform the dangerous work under the leadership of a Danish sergeant.
In the aftermath of World War II, a British colonel and his wife are assigned to live in Hamburg during the post-war reconstruction, but tensions arise with the German widower who lives with them.
Denmark, 2016. A blurred note is found in a bottle that has traveled across the ocean for a long time. After deciphering the cryptic note, Department Q follow a sinister trail that leads them to investigate a case that occurred in 2008. At the same time, new tragic events take place that test their faith and deepest beliefs.
