A former associate of Alexander, Amanda, plans to insert an impostor of him at a conference in order to sabotage an agreement to ban the production of chemicals that can be used to manufacture chemicals weapons, which Alexander has been working on for the past two years. Apparently, Amanda is also involved in the assassination of George, a Greek legislator and an ardent supporter of this agreement. Unknown to the assassin and his associates, a young gypsy witnessed the murder and has stole away on a freighter to New York, where the conference is taking place. Alexander wants the team to go to New York and find this witness for the authorities to transport him back to Greece, where another friend of Alexander is prepared to guarantee his safety while the local police questions him.