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

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.

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