After the Jeep explosion, John's 16th birthday makes him confront the fact that he's destined to be alone. Meanwhile, after Cromartie's massacre, Agent Ellison must face off against both the Feds and his faith.

While Sarah, John and Cameron track another name from their list, they accidentally cross paths with T-1001. Meanwhile, a woman who Derek once knew in the past surprises him by appearing in the present.

Sarah's quest to find the meaning behind the "three dots" leads to a technology firm seeking an advanced microchip. Meanwhile, Jesse comes clean to Derek about her mission and Weaver makes an important introduction.

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

Sarah and John hit the road without Cameron and Derek to stay with Charley Dixon, where she reveals to Charley that her cancer may have emerged. Meanwhile, a computer worm infects John Henry.

Fate is changed forever on the explosive season finale episode! The Connors come face-to-face with Weaver in a confrontation that shakes John to the core and changes his reality. Nothing will be the same.