The film was distributed on VHS by InterGlobal Video Promotions Ltd.[5] During World War II, a United States Army chemical warfare battalion was rumored to have done battle against a Nazi Schutzstaffel (SS) unit somewhere in the Bavarian Alps.

[6][5] When several of the investigators are found dead, the Central Intelligence Agency sends Special Agent Nick Monroe in search of deserters from the missing Chemical Warfare unit.

[5] A top-secret nerve gas is discovered that has kept a battalion of flesh-eating World War II soldiers alive for decades.

[3] The nerve gas is known by the name Gamma 693, and was created to keep wounded soldiers alive, until they could be taken to a medical unit.

[citation needed]The German city locations were filmed in Munich, Bavaria, West Germany.