In the 1930s, Tomania falls under the control of dictator Adenoid Hynkel, who dreams of world domination. In the Jewish district of the capital lives a barber who looks so much like Hynkel that he could be his twin. During the First World War, the barber had saved the life of a military pilot named Schultz, who has now become a commanding officer. Schultz pays the barber back by protecting the area in which he lives from anti-Semites. But when Schultz is arrested for being too friendly with Jews, both men are taken to a concentration camp. Later, the two men escape and the barber is mistaken for Hynkel. He takes the opportunity to make a radio speech in the dictator’s place.