The film is based on the true story about the three dramatic days in April 1940, where the King of Norway is presented with an impossible ultimatum from the German armed forces: Surrender or die! With German Air force and soldiers hunting after them, the Royal Family is forced to flee from the capital.
They decide to separate ways, without knowing if they will ever see each other again. The Crown Princess Märtha leaves Norway with the children to seek refuge in Sweden, whilst King Haakon and the Crown Prince Olav stay to fight the Germans. After three days of desperately trying to evade the Germans, King Haakon makes his final decision. He refuses to capitulate, even if it may cost him, his family and many Norwegians -their lives.