The film is loosely based on the story of Norwegian politician and diplomat Arne Treholt, who in 1985 was convicted of high treason and espionage on behalf of the Soviet Union and Iraq.

Treholt confronts Otto Meyer, head of Norway's CIA-backed Stay Behind force for firing the rockets, and while there takes a copy of their field manual.

To decide which apprentice will be made a full ninja, Black Pete and Bumblebee compete in an orienteering race, while Tromsø and Stay Behind spy drones watch.

After the bombing of the Oslo Central Station, which the CIA blames on the Russians, Treholt travels to Vienna to meet with members of the KGB to verify evidence that Stay Behind was involved.

After returning to Gressholmen, Stay Behind attacks with a combination of aerial bombardment and ground assault, with Black Pete helping to bypass the island's defenses.

The Ninja Force regroup at Ragnhild's workshop in the Lofoten mountains and are joined by Black Pete, who had been acting under Treholt's orders and stole Stay Behind's operational plans.

Meanwhile, the Ninja Force and King Olav celebrate the successful completion of Operation Saga Night with a feast and take a picture with banners saying "Mission Accomplished".

[7] Comedian Trond Viggo Torgersen played the part of King Olav V.[5] Although the movie was not a big box-office success, it did receive some very good reviews.

Marcus of The Wall Street Journal: "Hilarious and menacing, absurd and insightful, and an accomplished work of genre film making that authoritatively upends the cold-war spy thriller".