This is the story of the methods used to defeat Hitler's V1 (doodlebug) and V2 (rocket) "revenge weapons" towards the end of the second world war. Even though the Nazis were in retreat these weapons could have turned their defeat into victory. The film includes references to Hannah Reich, who in real life was a German test pilot.

A schoolteacher and his pupils visit Paris where they outwit a gang of crooks.

Barry Kohler, a young Nazi hunter, tracks down a group of former SS officers meeting in Paraguay in the late 1970s. The Nazis, led by Dr Mengele, are planning something. Old Nazi hunter, Ezra Lieberman, is at first uninterested in Kohler's findings. But when he is told something of their plan, he is eager to find out more. Lieberman visits several homes in Europe and the U.S. in order to uncover the Nazi plot. It is at one of these houses he notices something strange, which turns out to be a horrible discovery.

Charley Davis wins an amateur boxing match and is taken on by promoter Quinn. Charley's mother doesn't want him to fight...

During the first world war, novelist Edgar Brodie is sent to Switzerland by the Intelligence Service. He has to kill a German agent. During the mission he meets a fake general first and then Elsa Carrington who helps him in his duty.