A poor art student in New York City finds a leather bag filled with diamonds. He makes plans for a worry-free life with his gorgeous girlfriend - but soon he realises that he is being hunted. Trailing him is the Ghost, the world's greatest assassin, who has just pulled off his most high-profile hit, killing Walter Zelvas, a top member of the international Diamond Syndicate. But the diamonds he was supposed to retrieve from Zelvas are missing...