In 1944, World War II was in full swing, and the war situation was turbulent. Nazi Germany attacked from all sides, but under the joint counterattack of the Allies, the German offensive had become a spent force. At this moment, some senior German officers realized that the balance of the war had tilted, and Hitler's (David Bamber) war strategy would lead Germany to destruction. More and more officers believed that only by getting rid of Hitler and his supporters, launching a coup to seize power, and reaching an agreement with the Allies through peace talks could Germany be finally saved. Under the influence of such thoughts, a plan called "Valkyrie" came into being. In the whole plan, Army Colonel Claus von Stauffenberg (Tom Cruise) played an important role. Stauffenberg, who was born in an aristocratic family, was once fascinated by Hitler and his Nazi program. In 1943, he led an armored division to the battlefield in Tunisia, North Africa, where he lost his right arm, two fingers on his left hand and his right eye. The cruelty of the war caused a huge change in his thinking. After returning to Germany, he left his wife and children and began to plan the dangerous mission of assassinating the Supreme Leader Hitler together with the senior officers of the assassination organization...