When John Connor, leader of the human resistance, sends Sgt. Kyle Reese back to 1984 to protect Sarah Connor and safeguard the future, an unexpected turn of events creates a fractured timeline.
This Sarah is much different from the Sarah he was expecting in that she's already a bad-A and knows all about Kyle being sent back to save her and the Resistance and the war against the machines. In fact, she's been being trained by the reprogrammed T-800 (Arnold Schwarzenegger) for many years prior to Kyle showing up.