100 years ago, the last remnants of humanity were forced to retreat behind the towering walls of a fortified city to escape the massive, man-eating Titans that roamed the land outside their fortress. Only the members of the Scouting Legion dared to stray beyond the safety of the walls – but even those brave warriors seldom returned alive. Those within the city clung to the illusion of a peaceful existence until the day that dream was shattered, and their slim chance at survival was reduced to one horrifying choice: kill – or be devoured!
The truth revealed through the memories of Grisha's journals shakes all of Eren's deepest beliefs. There is no rugged but free land beyond the walls. There is a whole other world, equally full of oppression and war. Suddenly, the ambitions that have animated the Survey Corps for generations seem small and naive. What is there left to fight for?