When tycoon Robert Maxwell is assassinated at sea by an unknown agency, conflicting interests in the arms trade threaten all-out war.
SAS soldier Neil Slater has left the Army and is trying to make a new life for himself as a teacher, but when he is accidentally caught up in an attempt by terrorists to kidnap one of his pupils, he finds himself sucked back into the world of undercover operations.
Bowing to the inevitable he allows himself to be recruited by the Cadre, a group that applies "the rules of war" to those who threaten the internal and external security of the State. When a mission to kill an arms dealer in Paris leads to a high-speed chase across Europe and into Eastern Europe, he discovers the connections between Robert Maxwell, the arms industry and the origins in Nazism of the government agency who employs him.
Slater soon finds himself in a rising body count situation and asking the question: who is the real enemy?