Erich Von Stalhein is in England encouraging soldiers to desert and join an international brigade based in Czechoslovakia.

Biggles stumbles across the plan simply by spotting Erich in London and following him to an Army base in Kent. He then convinces a tempted deserter to play the game and follows him eventually to a prison camp in North Korea (via a quick sortie to Berlin).

Here Biggles and the team (including Gimlet) foil Erich's plans (again) and destroy the base, rescuing a few misguided soldiers for good measure.