Coupled with the military's cover-up of a previous incident, the shocking discovery inside the Walls causes a stir. Elsewhere, while the new Scout recruits are held for observation, a surprising threat appears.

With the appearance of Titans within Wall Rose, Sasha and Connie ride as messengers to warn their villages of the impending threat.

The Scouts search for a hole in the wall while Eren and the others learn that someone close may be hiding all the answers.

Unarmed and overwhelmed by the Titan assault on the castle, the only hope for the Scouts may lie in a promise and a secret.

Utgard Castle comes crumbling down as Ymir desperately battles the Titans. Now, Christa must fulfill the promise they made long ago during winter training.

Following the battle, the Scouts regroup atop the wall only to find more questions than answers.