Jeremiah and Kurdy discover other tribes of young adults whose wild adolescence has divided them into rival groups. After realizing his father might still be alive, Jeremiah wants to bring peace among these groups (Part 1/2).

Jeremiah and Kurdy discover other tribes of young adults whose wild adolescence has divided them into rival groups. After realizing his father might still be alive, Jeremiah wants to bring peace among these groups (Part 2/2).

Jeremiah and Kurdy find one of Simon's contacts who tells them about the Burners, an unknown group burning entire towns at random. During his investigation, Jeremiah meets Claire, who wishes to explore the world beyond the sea.

Jeremiah and Kurdy are sent on a dangerous mission that will test their bond. In Cranston, they also discover that not all "Old World" ideologies died with the Big Death.

Jeremiah and Kurdy meet John, a man living as the comic book hero "Captain Iron." Meanwhile, Elizabeth discovers David Quijana's secret: a "Typhoid Mary" who could single-handedly bring back the Big Death.

Jeremiah and Kurdy are skeptical when they meet Dr. Reece, an impostor who grew up in the shadow of his father, a renowned surgeon. When Reece's bag is stolen, Jeremiah must retrieve it to help a pregnant woman.