April 9th, 1940, Norway is under siege. As German warships close in on Oslo, Colonel Birger Eriksen, commander of the undermanned Oscarsborg Fortress, makes a bold decision that changes the course of history.
After five years, the German occupation of Norway ends on 8 May 1945. The rebuilding of the nation can begin, but first the final chapter must be written. In a dark cell at Akershus Fortress sits the man who committed the greatest treason of all: Vidkun Quisling. Now he must be held accountable for his actions and the atrocities that Nazi ideology led to.