The Borg have once again targeted the Federation; this time, their devious plot threatens not only the present, but Earth's past as well. While Commander Riker, Deanna Troi, and Geordi La Forge work hard on the surface of 21st-century Earth to keep history on schedule, the rest of the crew plays a desperate game with the genetically-networked attackers above the planet, matching former Locutus Jean-Luc and cybernetically-naive Data against the erotic, mechanized cunning of the Borg queen. Resistance is futile.