A planet-sized Machine of terrifying power and unfathomable purpose hurls entire star systems into a supermassive black hole. Wesley Crusher, now a full-fledged Traveler, knows the Machine must be stopped... but he has no idea how. Wesley must enlist the aid of Captain Jean-Luc Picard and the Enterprise crew, who also fail to halt the unstoppable alien juggernaut"s destructive labors. But they soon divine the Machine"s true purpose - a purpose that threatens to exterminate all life in the Milky Way Galaxy. With time running out, Picard realizes he knows of only one person who might be able to stop the Machine in time to avert a galactic catastrophe - if only he had any idea how to find him....