The Recon Corps moves Eren to an old abandoned castle where he will continue his training. Hange visits and reveals that she's been putting two captured Titans through a series of tests and trials — experiments that she wants Eren's help with.

With the Female Titan still chasing after Levi's squad, Eren considers turning himself into his Titan form, but Levi tells him to choose to be either a monster or a member of the Recon Corps. As Eren remembers what he has learned from the squad, he realizes that the danger and sacrifice they all share is not what binds them — it is trust. Now it is up to Eren to make the decision of who he will trust.

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

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

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 gather for a feisty feast before leaving to retake Wall Maria to uncover what's hidden in the basement once and for all.