Centuries ago, mankind was slaughtered to near extinction by monstrous humanoid creatures called titans, forcing humans to hide in fear behind enormous concentric walls. What makes these giants truly terrifying is that their taste for human flesh is not born out of hunger but what appears to be out of pleasure. To ensure their survival, the remnants of humanity began living within defensive barriers, resulting in one hundred years without a single titan encounter. However, that fragile calm is soon shattered when a colossal titan manages to breach the supposedly impregnable outer wall, reigniting the fight for survival against the man-eating abominations.

Eren’s battle against the Titans rages on! After fighting the Female Titan, he has no time to rest as a hoard approaches Wall Rose. A new war begins and as they face the threat to humanity, they begin to unearth terrifying secrets. What are the Titans really and where do they get their power—and who’s really on their side?

The truth about the Titans begins to come to light. Political secrets, a false king, and the reality that will shake the foundation of the world—all falls on the shoulders of Eren and his friends, as they fight to survive. With Historia set to be the rightful Queen, the Levi Squad must act. But a figure from Levi’s past, the deadly Kenny, could turn this into a losing battle. Are Eren and his friends prepared to face the true monsters that lie within the walls?

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?