According to coded information received from Interpol, Dr. Factor, the internationally wanted terrorist and art treasure robber, is hiding in Budapest. Catching him is the task of the detectives participating in the game. The game can be played by a minimum of three and a maximum of six. One of the players is Dr. Factor, who during his "invisible" escape tries to escape from his ring of pursuers by helicopter, bus or taxi, so that he only has to show himself at the specified intervals...