In THE FOURTH PROTOCOL: The Game, you are John Preston. Your aim is to piece together the jigsaw, uncover the plot, prevent the breaching of the Fourth Protocol, and stop Plan Aurora. In your task, you are able to access the on-line resources of CenCom, MI5's central communications computer, and use the services in the field of both MI5 and the intelligence networks of friendly nations. But too many wrong decisions and moves will lower Preston's prestige in the service and valuable field support will be withdrawn. All three episodes of THE FOURTH PROTOCOL: The Game must be completed, against the deadline, before Plan Aurora is finally thwarted.