The complete 4 book series of "The 100" by Kass Morgan Book 1: The 100 Book 2: Day 21 Book 3: Homecoming Book 4: The Rebellion Also a hit TV series with 7 seasons Book 1 has a bend in the cover but besides that they are all in excellent condition. I didn't even read the last 2 books and bought the set new. What is The 100 book about? Ever since a devastating nuclear war, humanity has lived on spaceships far above Earth's radioactive surface. Now, one hundred juvenile delinquents — considered expendable by society — are being sent on a dangerous mission: to recolonize the planet. Young adult book, science fiction