As the Recon Corps begins its push toward Shiganshina, they encounter an intelligent Female Titan unlike any they've seen before. When Armin hypothesizes that it's really a human that's been turned into a Titan, he, Jean, and Reiner attempt to stop it.

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.

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

With a new enemy revealed, Eren and the Scouts fight back using all the techniques at their disposal.