The Connors come face-to-face with Weaver in a confrontation that shakes John to the core and changes his reality forever. Nothing will be the same.

When John attempts to rescue Skynet's latest target he finds himself closing in on Weaver, but at what cost? Game plans change, causing Sarah and Ellison to reunite. Meanwhile, Weaver learns Ellison's secrets.

Fearing for her life, Sarah stashes John in a safe house. Cameron and Derek struggle to work together after she reveals a big secret. John Henry becomes compromised.

Jesse's submarine mission in the future takes a fatal turn that has unforeseen effects on John, Sarah and Derek in the present. Before heading out, Sarah deals with Cameron and John makes a tough choice.

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.

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

Haunted by nightmares of the man she killed in the factory, Sarah checks in to a sleep clinic. When suspicious things begin happening, Sarah suspects Skynet may be using the facility for brain-mapping.

Sarah, John, Cameron and Derek investigate the company town connected to the destroyed factory while Weaver sends her own man into town in search of a potential survivor.

An injured Sarah is guided by the image of John's father, Kyle Reese, while Weaver's move to protect John Henry results in deadly consequences.

Sarah's obsession with the three dots intensifies when she tracks down a blogger with a intimate knowledge of the symbol, and she ends up finding something she never expected. Meanwhile, Riley gets closer to John and faces off with Cameron.

Sarah and Cameron work to save a family on the list with a connection to Derek in the future. Meanwhile Jesse's life hangs in the balance.

She never sleeps, so what does she do at night? Cameron's surprising, secret life is revealed. Also, history is forever changed when a Terminator is sent back to the wrong time.

Sarah's obsession with the three dots leads her to a company that she believes may have Andy Goode's Turk. Meanwhile, Jesse's plans complicate things even further, and Weaver introduces Ellison to someone very important.

Sarah's mystifying nightmares creep into her real life, but what do they mean for her and John? Meanwhile, Derek and Jesse investigate a possible Skynet conspirator.

John and Riley's impromptu trip to Mexico results in deadly consequences. Meanwhile, Sarah and Ellison finally come face-to-face.

The Connors find themselves on high alert and in odd company after their house is robbed. Elsewhere, one Terminator terrorizes Ellison, while another gets dangerously close to John Connor. Meanwhile, Derek and Jesse continue to get reacquainted.

What would a T-1001 need with a doctor? Sarah, John and Cameron may soon find out as they track down another name on their list. Elsewhere, a woman from Derek's past surprises him in the present.

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

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.

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.

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.

Rocked by the Jeep explosion, John's 16th birthday forces him to confront the reality of his destiny alone. Meanwhile, Agent Ellison faces off with his faith and the Feds in the aftermath of Cromartie's massacre, and a new player is introduced, Catherine Weaver, who is the CEO of a high-tech corporation.