Entrenched behind the so-called Atlantic Wall, the Nazi troops await the imminent Allied invasion. In England, the greatest armada the world has ever seen is being prepared, for a confrontation between men and machines. It is the beginning of summer, 1944, and a Spanish teacher, exiled after having fought for the Republican cause, warns of a new and terrifying German weapon. The inventor of this devastating weapon, a Jewish scientist, affirms that, in one explosion, it could destroy all the troops stationed in the south of England, but the Allied High Command are sceptical. However, this is not the moment to take unnecessary risks, and faced with even the remotest possibility that the reports are true, Winston Churchill organises a special commando mission. The commandos, a band of misfits and lost causes, lead by a maverick US coronel, must infiltrate Nazi Germany, find and destroy this menace of physics.