Something very weird is happening in Zona. The people of Zona are turning. The vaccine is wearing off and the people are…hungry. For people. It's not gonna go great if that place becomes overrun with zombies but it looks like it's happening.
Meanwhile, back in the woods of America, Doc, 10K, Red, and Sun Mei learn from Henry Rollins that the convoy to take them to Newmerica is delayed. The people are freaked out by it, but 10K and Doc decide to go along with the army guys to find the convoy.
Dr. Teller pulls Murphy and Roberta aside and tells them the horrible truth. That not only is the vaccine failing, but what happens is swift. Anyone who got the vaccine goes crazy near-instantly and becomes homicidal. While Murphy and Roberta weren't vaccinated, Dr. Teller definitely was. Time is running out.
And then…this is intense. The dudes in the house make Addie and Lucy fire back at 10K. Under threat of death. So now Addie and 10k are shooting at each other. Which is bad because they're both excellent shots. They fire bullets that collide MID-AIR!
Dr. Teller sneaks Murphy and Roberta into the Founder's house to get them on the helicopter leaving the island. The Founder, who is clearly losing it, lectures them that they don't know the whole picture, and then Murphy and Roberta are able to sweet talk him into the helicopter ride. Once again, he mentions "The Reset." What is that?
And then, when the military peeps, 10k, and Doc decide to give their fallen comrade mercy and kill him (bullet through the head), something strange happens. He should be dead, but instead, he gets up! He's a Z!
In the firefight trying to subdue the Z, Addie takes a bullet across the cheek. It's enough of a distraction that it allows Lucy to escape. Addie says she'll find her, but then…Lucy is taken! By the guys in black uniforms!
Just as he starts to get super violent and crazy, Dr. Teller tells Roberta to pay attention to her visions but he also tells Murphy that his daughter is alive. Then he atacks Roberta, and they're forced to kill him.