Set after the events in Terminator 2: Judgment Day (1991), Sarah Connor and her son, John, try to stay under-the-radar from the government, as they plot to destroy the computer network, Skynet, in hopes of preventing Armageddon.
Cast:Lena Headey , Thomas Dekker , Summer Glau , Richard T. Jones , Brian Austin Green , Garret Dillahunt , Shirley Manson , Leven Rambin , Stephany Jacobsen , Dean Winters , Mackenzie Brooke Smith , Shane Edelman , Sonya Walger , Busy Philipps , Jonathan Jackson , Sabrina Perez , Matt McColm , Brendan Hines
A modern-day warrior and single mom hides from a government out to get her and her teenage son.
John goes stir-crazy when he's confined to the house, Sarah looks up an old friend for some help, but she may face betrayal, and Cromartie begins reassembling himself.
John and Cameron start their new school, Sarah befriends a man who may be important to Sky Net and then struggles with what she must do. Meanwhile, Cromartie has tracked down a scientist to assist him in his regeneration.
When they learn of a huge shipment of Coltan arriving at the Port of Los Angeles, Sarah, John and Cameron believe that Cromartie has returned but upon investigation discover an entirely new Terminator with a mission of it's own.
Sarah is troubled to learn that Andy Goode has rebuilt his computer the Turk II and entered it into a chess competition with a military contract as the winning prize. A Resistance fighter from the future takes matters into his own hands.
Desperate to save Derek Reese's life, John enlists the help of Charley Dixon but the paramedic struggles to come to terms with time travelers and Terminators. In the future Derek fights to survive when he's separated from his brother Kyle.
As Derek Reese recovers from his injuries, Sarah attempts to retrieve the severed Terminator hand and Cameron tracks down Dmitri Shipkov. Meanwhile FBI agent James Ellison pays a visit to Dr. Silberman to learn more about Sarah's past.
Derek catches Cameron in a lie that puts them inside Vick's head, Sarah continues to track the Turk, and Cromartie comes closer to finding John.
Sarah finds herself in a business transaction with a mysterious business man named Sarkissian, who claims to be in possession of the stolen Turk computer system and wants an exorbitant amount of money for it. Derek recalls his childhood before the so-called Judgement Day in 2011, when a nuclear war triggered by Skynet will destroy the world. Agent Ellison finally discovers that the terminator Cromartie is impersonating an FBI agent, and makes arrangements to apprehend him.