High above New York City a helicopter explodes. Aboard the craft is the latest biological warfare weapon which has been secretly developed by the CIA (Central Intelligence Agency)... Cassandra-G. A vaccine and plans have been stolen are among the fragments of the helicopter wreckage along with a shell fired from an M16. The copter was shot down from fire of an expert sharpshooter armed with an M-16. The CIA concludes that the act was the responsibility of the super sniper, Golgo-13. An official release by the CIA links Golgo-13 to the KGB (the Soviet intelligence group). Under these circumstances, The CIA copter incident and the unknown where-abouts of Cassandra-G become entangled. A representative of the secret international organization, FIXER, transmits a message. FIXER believes the affair is the work of the remnants of the DREK Empire and not Golgo-13. After the dispatch, the representative disappears. The situation becomes more and more mysterious. A man who calls himself Condor agrees to help FIXER. In East Berlin, because Condor has received some information on Cassandra-G, the CIA, KGB, and even DREK are threatening his life Upon a request from FIXER, Golgo-13 has gone into action. He is to get information on a vaccine from Condor and eliminate the leader of the DREK group...