A decade has passed since John Connor (NICK STAHL) helped prevent Judgment Day and save mankind from mass destruction. Now 25, Connor lives "off the grid" - no home, no credit cards, no cell phone and no job. No record of his existence. No way he can be traced by Skynet - the highly developed network of machines that once tried to kill him and wage war on humanity. Until, out of the shadows of the future steps the T-X (KRISTANNA LOKEN), Skynet's most sophisticated cyborg killing machine yet. Sent back through time to complete the job left unfinished by her predecessor, the T-1000, this machine is as relentless as her human guise is beautiful. Now Connor's only hope for survival is the Terminator (ARNOLD SCHWARZENEGGER), his mysterious former assassin.