During the late 1970s, as the Rhodesian Bush War reaches its height, arms dealer David Swansey (Richard Harris) is a "sanctions busting" specialist, one of many who keeps the Rhodesian Security Forces supplied through black market purchases despite an extensive international arms embargo. Swansey's latest assignment is to arrange the illicit purchase of military helicopters, which he acquires in the form of surplus Bell UH-1s being auctioned from a United States Air Force base in West Germany. However, word of this transaction is soon leaked to a foreign office of the Zimbabwe African National Union (ZANU), which applies strong political pressure in an attempt to kill the deal in its cradle. Due to this, the helicopters are barred from reaching Rhodesia and instead diverted to neighbouring South West Africa, then administered by South Africa.