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.

Eighty years after German super-soldiers crushed the Allied forces in World War II, Zara works as a maid at a Nazi cadet academy in the Easter American Territories. Zara can't escape the Nazi's constant obsession with the Aryan ideal, with a Japanese father and American mother she doesn't fit in with the occupying forces. Although she can't hide her lineage she can hide another genetic gift from her father, the ability to control wind. If the Fuhrer knew about her ability, she would be eradicated.