A boy, Patric, picks a man's pocket on the Paris metro and drops off the wallet in his accomplice Sara's hands in front of Golgo 13. Minutes later the man whose pocket was picked, Henri Bazaine, is found dead. Later, just before Patric meets up with Sara he notices a man who he suspects is a detective and so he slips away unnoticed. The man follows Sara and it turns out he is an assassin who killed Bazaine and knows that Sara saw him sitting next to Bazaine. Suddenly Golgo shows up and saves Sara and beats up the assassin. Patric is found by the assassin and is beaten into revealing Sara's location as the wallet contained a memo. Having located Sara, he chases after her but once again she is saved by Golgo. The assassin contacts his client, Carnac, but Golgo kills the assassin having let Carnac know where Sara will be. Golgo takes Sara to a hotel and Carnac appears, and Golgo kills him. Carnac had belonged to a group of biologists working on a project and had stolen the funds for his own purposes. Bazaine was to deliver the memo containing the key to the project that could turn it into a contagion but as he was unable to he was killed. Golgo had been hired by the biologists to ensure Carnac failed.