A confrontation with Weaver shakes John to the core and forever changes his reality.

John tries to rescue Skynet's latest target; Ellison and Sarah reunite; Ellison's secrets are uncovered.

Sarah, fearing for her life, hides John in a safe house with the only person she feels she can trust (Dean Winters); Cameron and Derek struggle to work together after she reveals a big... Full summary

Jesse's submarine mission in the future takes a fatal turn with unforeseen consequences in the present for John, Sarah and Derek; Cameron has become a liability and Sarah must deal with... Full summary

Jesse has a flashback to a mission aboard her submarine, the Jimmy Carter; John and Sarah make plans to leave their house.

Cameron's glitch resurfaces, resulting in unfortunate consequences for everyone; Riley is afraid that Cameron has discovered her secret.

Haunted by nightmares, Sarah enters a sleep clinic; when suspicious things start happening, Sarah thinks Skynet might be using the clinic for brain-mapping.

The Connors visit a town connected to the destroyed factory; Weaver sends a man into town in search of a survivor.

While fighting to stay alive, Sarah is guided by the image of John's father; Weaver's attempt to protect John Henry has deadly consequences.

Sarah tracks down a blogger who knows about the three dots; Riley faces off with Cameron.