1937. As the Reich's most celebrated fighter ace, Dieter Merz's fame brings him into contact with the top echelons of the Nazi regime. All he wants to do is fly, but for how long can he deny the toxic nature of Hitler's rule? Scotsman and ex-marine Tam Moncrieff is recruited by a nameless intelligence agency in London to go to Germany and sound out Hitler's resolve. Does he really intend to invade Czechoslovakia? Do his generals support him? Can the march to war be stopped? As duty collides with conscience, fate will bring both men together. These are desperate times calling for desperate measures. To avoid war a killing strike is needed: la estocada. The question is, who is the matador, who is the bull?