One summer night, police discover the lifeless body of a young woman on an abandoned pleasure boat. Forensics indicate that she drowned, but her clothes are dry and the boat is still afloat. The next day, a man is found hanging in his completely empty apartment. It seems like a suicide, but how did he kill himself with no furniture to climb on? Detective Joona Linna is called in to investigate, and he soon finds a surprising connection: arms trafficking. Because of the potential tie to terrorism, Joona is forced to join forces with Saga Bauer, a detective with the Swedish Security Police To stop the bloodshed, the two must find a way to get into the heads of dangerous arms dealers, but what they find there will shake them to their very cores.