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In 1944, in fear of a complete German defeat in the World War II, a group of high command officers plot an attempt against Hitler, and one of the leaders of the conspiracy, Stauffenberg (Sebastian Koch), 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.