Martial Arts superstar Chuck Norris at his best against a background of terrorism and International Intrigue and revenge. Scott James (Chuck Norris) enlist an old friend (Lee Van Cleef) to avenge the death of his girlfriend at the hands of a deadly band of ninja assassins. He discovers the octagon, a sinister training centre for terrorism funded by international extremists, who are covertly sending out ninja killers to cause worldwide mayhem. In a world of choices, for Scott James there is no choice... He must face the truth of his childhood nightmares, and face the octagon and its killing machine.