Documentary film that tells about the failed attempt to assassinate Hitler on July 20, 1944. At the center of the film, a survey of the figure of Claus von Stauffenberg, a German officer and opponent of Hitler, who carried the suitcase bomb into the Fuhrer's headquarters in E. Prussia ("the wolfs' den") that was supposed to kill Hitler, and his heritage in Germany after World War II. Includes testimonies, analysis of historians and politicians and archival films.