The America that we know is gone - destroyed by war and a biological disaster.  The country is split in two. The dangerous East is full of human survivors riddled by mutation. Lane has always lived in the West, behind a giant wall meant to keep her safe from the feral, mutated creatures of the East. She soon learns that her father is a fetch -- hired to travel into the Feral Zone and retrieve valuable art. When he doesn't return she is forced to go into the feral zone to save him and also finish his mission -- retrieve something of value for a high-ranking official.

Tish is writing journal entries as an assignment for her English teacher, Mrs. Dunphrey. She has promised not to read any entries marked "Don't read this" and that is exactly what Tish writes before almost every entry. As Tish struggles with her abusive father and neglectful mother, she writes about those struggles in the journal. Dunphrey comments positively about how much she is writing, asks her to write some entries she can actually read, and also scolds her for not turning her journal in on time and for not completing other homework assignments.

While it certainly contains the titular activities, this book isn't nearly as sensationalistic as its title might imply. More than anything, Sex & Violence is a fantastically-voiced, layered character study. The description "layered" applies to narrator-protagonist Evan, the other characters in the book, and their relationships; and it applies to the meanings of, manifestations of, and connections between sex and violence that Evan gradually comes to grasp in unstated, embodied ways.

Camp Merrie-Seymour for Boys is the home to Ariel and Max for the summer. Six weeks without technology, living in the Jupiter cabin (all the cabins are named for planets) they quickly realize they are different from everyone else at camp. Sent there not to overcome their addiction to technology (the advertise goal of the camp) Max and Ariel are there because their father works for Merrie-Seymour and camp tuition is free for employees. The only ones not obsessed with getting a sweet taste of the internet, the boys of Jupiter quickly begin to win the cabin competition.