Katya (Mitchell Pfeiffer) is a beautiful Russian book editor who sends a manuscript written by a well-known Soviet scientist to British bookseller Barry Blair (Sean Connery), thus inadvertently involving them in the world of international espionage. The manuscript, which contained information that could change the world's power landscape, was intercepted by super agents from Western countries, so Blair was sent to Russia to find out more about the mysterious document. But when Blair met Katya, he found it difficult to choose between his mission and the woman who was both loyal to his country and affectionate to him.