Ironside and Mark travel to France to handle the security for an American delegation at a conference with the Chinese, but somebody is determined to stop the talks from going ahead. Meanwhile, Mark falls in love with one of the Chinese delegates.

The son of an old friend, fearing that his father's life is in danger, asks the Chief to go to Tokyo. Once there Ironside finds his old friend wheelchair-bound as a result of an accident, and begins to work on his own theory about who might have hired a hitman to kill such a respected old man.