In the fateful year 1940, the Germans occupy Denmark and now the Danish royal house once again has a central role, as together with the politicians they have to decide what is best for the country: cooperation or resistance. Crown Prince Frederik is 41 years old and still has a difficult relationship with his father, the old King Christian X, who keeps his son out of royal duties. But when the king is hospitalized after a violent riding accident, the crown prince is appointed as ruling deputy during one of the most critical moments of the war, much against his father's wishes.