Wounded in Africa during World War II, Nazi Col. Claus von Stauffenberg returns to his native Germany and joins the Resistance in a daring plan to create a shadow government and assassinate Adolf Hitler. When events unfold so that he becomes a central player, he finds himself tasked with both leading the coup and personally killing the Führer.

In 1944, a group of high command officers plot an attempt against Hitler, and one of the leaders of the conspiracy, Stauffenberg, goes to a meeting with the Fuhrer in charge of exploding the place. However, Hitler survives and the officers are executed. This unsuccessful operation was called "Valkyrie Operation", and this realistic movie discloses this true event.