Suddenly Ellison notices that Sarah looks like she's standing in front of a green screen or something, and outside Weaver's office is something approaching, in the air, rather quickly. It gets a little closer, and it turns out it's a hunter-killer headed straight at the window. Weaver goes into liquid metal form and spreads her arms out and forms a shield to protect them from the flames and the exploding glass. "Run!" she says to the humans crouching behind her. She doesn't have to tell them twice. Actually, she shouldn't have had to tell them once. The gang goes flying out the door, and Weaver morphs back into human form. And the eel that was formerly in the aquarium slithers into her ankle, joining her body. Nice.
Everyone scrambles down the stairs to the basement, but Sarah wants to get out: "They're trying to kill my son," she says. "No, they're trying to kill my son, Just like you are," says Weaver. Sarah's all, "Ten bucks says Cameron already did it!" Weaver says Sarah'd better hope not: "Your John may save the world, but he can't do it without mine."
Down in John Henry's room, the gang find a lifeless Cameron, with her chip taken out. John Henry's nowhere to be found, but the words "I'M SORRY JOHN" are flashing on the computer screen. John wants to know where he is. "Not where. When," says Weaver. Ellison's all, whaaaaa? Like what MORE DOES HE NEED TO SEE? That's when Sarah notices the three dots -- red lights -- on the computer, which John recognizes as Andy Goode's Turk. "You lying terminator bitch," snarls Sarah, who accuses Weaver of building Skynet. "No. I was building something to fight it. And I'd watch who's calling who a bitch," she says.
Weaver asks if Ellison's up for going after John Henry, their "boy," but Ellison's all "no thank you!" so she asks him to pick Savannah up after gymnastics. So she flicks the switch, and the blue electricity starts to swirl around the group, but Sarah steps back. She tells John she can't go. "He's got her chip! He's got her!" he whines. Didn't he just start to figure out that the terminators are just machines? Oh, right; that was before Cameron took her shirt off. "I'll stop it," she tells him, and the blue ball whisks them away.
Naked John and Naked Weaver get up from their crouches, John looking much more in pain. And he barely looks away for a second before Weaver's already morphed her up some futuristic biker skankwear. But Cameron's body's not there. "No. It doesn't come through," Weaver tells him. There's the sound of an approaching patrol, complete with dogs, and John grabs himself a nearby jacket, and once the patrol is past, the two of them steal away into the tunnel, only to be found by someone else who yells, "Got one!" and trains his rifle on John, thinking he might be metal. John looks around, and Weaver is nowhere to be found. So that's a concern, but the person leading this patrol makes John smile: it's Unky Derek, who comes forward and stares into John's eyes, which is how he says he can tell who's human.
John introduces himself. "I know a lot of people, kid. Don't know you." Derek asks the group if anyone's heard of John Connor. Nope. However, Derek thinks John's going to be famous, because his brother's back, and John's wearing his coat.
John turns around, and sure enough, there's Kyle Reese, strolling in in slow motion. He and John stare at each other for a while, and then John's attentions shift to the woman behind Kyle. It's Cameron! Well, actually, since she's playing with a dog that isn't growling at her, it can't be Cameron; must be Allison from Palmdale. Elsewhere, there's a final crackle back where John and Weaver jumped through time, and we hear Sarah say, "I love you too."
So this is the way the world ends: Sixteen-year-old John Connor smack in the middle of the end of the world, only no one's heard of him. So either this has always been the start of John Connor's involvement with the resistance, which doesn't seem that likely, since you'd think the Derek who came back to protect the young John Connor might have realized that teenage John would be jumping forward any day to the future. Probably more likely: John jumping ahead in time means that he missed Judgment Day altogether and wasn't around to lead the resistance already like he would have been. I think I prefer the time-travel convention that you can't actually change the past or future, which is one the Terminator universe used to subscribe to, but we already know this show doesn't. Besides, if future time-travelers could alter the past, you'd have to think that people in the future would have been sending people back in time to watch this television show and keep its ratings up so it wasn't constantly facing cancellation.
Hasta la vista, Sarah Connor. See you when we see you.