Cameron is damaged by Sarkissian's attack and the Connors are forced to go on the run. Agent Ellison and Charley Dixon compare notes, while Cromartie believes Ellison can lead him to Sarah. Meanwhile, Cyberdyne CEO Catherine Weaver initiates Project Babylon.

Sarah and Cameron take it upon themselves to investigate a nuclear power plant. John becomes less enthusiastic about academics, but flourishes socially with the help of a new friend. Meanwhile, Catherine Weaver gains another piece of the puzzle for her pet project.

After Cromartie kidnaps Charley’s wife, Sarah and Derek are put to the test, as they must outwit him to ensure a safe rescue, but at what cost? Meanwhile, John is in his own sticky situation as he finds himself caught between Cameron and Riley

A software glitch causes Cameron to forget who she is. She goes missing from the Connors and is taken in by a street kid named Jody. Cameron and Jody end up at a halfway house where Cameron meets with a social worker who uncovers some of Cameron, 's distant memories. Meanwhile, Catherine Weaver meets with Agent Ellison to discuss his future at Zeira Corp, and Ellison does some digging into Weaver, 's past.

John and Derek infiltrate a military academy in order to protect an integral member of the future resistance. Meanwhile, Weavera 's first assignment for Ellison takes an interesting turn of events when he discovers a specter from his own past.

A woman from Derek’s past, Jesse, appears while Sarah, John and Cameron are searching for a person on their list.

It's a high alert for the Connors along with being in strange company when their house is burglarized. Elsewhere, Ellison is terrorized by one Terminator, while another closes in on John Connor. Meanwhile, Derek and Jesse continue to reacquaint themselves with each other.

Why would a T-1001 ever need to visit a doctor? Sarah, John and Cameron hope to find out as they track another name from their list. Meanwhile, a woman who Derek once knew in the past surprises him by appearing in the present.

John worries about Sarah and her nightmares, which seem to be affecting her in real life. Meanwhile, Jesse and Derek investigate a Skynet conspirator.

Sarah's preoccupation with the three dots takes her to a place she believes is holding Andy Goode's Turk. Meanwhile, Jesse's plans have come complications and Weaver makes an important introduction.

History is forever changed as a Terminator is sent back into the wrong time. Meanwhile, Cameron's secret life is revealed to all.

Sarah and Cameron must save a family connected to Derek. Meanwhile, Jesse's life is threatened.

Sarah discovers that a blogger understands what the three dot symbol means and must track them down. Elsewhere, Riley has a clash with Cameron over his bond with John.

Sarah sees a vision of Kyle Reese, John's father, as she deals with her injuries. When Weaver becomes protective of John Henry, it brings on fatal consequences.

Sarah, John, Cameron and Derek explore the company town which is connected to the decimated factory. Meanwhile, Weaver searches for a possible survivor.

Sarah decides to visit a sleep clinic after suffering from nightmares, where she speculates about Skynet's while at the facility.

The return of Cameron’s glitch results in regrettable consequences for everyone, and Riley fears Cameron has discovered her secret.

Jesse flashes back to a life-altering mission aboard her submarine, the Jimmy Carter. Sarah and John decide they can’t continue living in their house and make plans to leave.

Jesse’s future submarine mission will have an impact on John, Sarah and Derek in the present day. Sarah reckons with Cameron, and John makes a pivotal decision.

When Sarah believes her life is in danger, John and Charley Dixon hide away in a safe house. Elsewhere, after Cameron reveals a secret about herself, Derek decides to work with her. And Weaver’s efforts seem wasted after John Henry is compromised.

John finds himself closing in on Weaver as he attempts to rescue Skynet's latest target, but at what cost? With the game plan changed, Sarah and Ellison reunite. Meanwhile, Weaver uncovers Ellison's secrets.

The season 2 finale finds the Connors and Weaver in a face-to-face confrontation which shakes up John to his core and changes his reality from now on.