Coupled with the military's cover up of a previous incident, the shocking discovery inside the wall 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 Conny 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. Before they leave for Trost to get medical attention, Reiner must fulfill what he came to do.

With a new enemy revealed, Eren and the Scouts fight back using all the techniques at their disposal. However, the Armored and Colossal Titan have other plans in mind.

The Scouts rally and charge in pursuit, but Reiner is not quite himself while the group is trapped in the giant forest until nightfall.

When their group finally flees, Ymir wonders whether she should lie or stay true to herself, even if it means ruining the lives and futures of those she cares about.