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.
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.
Without a way to pursue the Titans, the Scouts have no choice but to recuperate as they wait for reinforcements. But do they still have faith in Eren?
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.