In 1940, the German war machine invaded Norway, and Gunnar Sønsteby, a young 22-year old accountant, immediately offered his services to the resistance. He turned out to have a very special and unique talent for leadership, and quickly became the head of all resistance-actions in the Oslo-area. The story of Gunnar, aka «No. 24», has never been more relevant. This skinny, modest, unassuming man, with the accuracy and meticulousness of an accountant, and the audacity and bravery of a real hero, gave the Gestapo years of relentless, tough resistance.