Eren begins his training with the Cadet Corps, but questions about his painful past overwhelm him. When he struggles with a maneuvering exercise, Bertolt and Reiner offer kindly advice.

Two years pass and the time for the recruits' graduation approaches. Annie proves her skill in a sparring session, Jean dreams of serving alongside the King, and graduation day brings shocking revelations — along with the sudden appearance of an old foe.

Five years have passed since the fall of Wall Maria and Eren faces off against the Colossal Titan after it appears out of nowhere once again, and knocks a strategic hole in the gate of Wall Rose. As Titans swarm the city, the newly graduated Cadets are called in to fight a brutal battle that won't be without casualties.

Cadets respond to Eren's terrifying transformation with doubt and fear as he struggles to understand it himself. If Armin can’t talk the commander into using Eren’s newfound powers for the good of humankind, all hope of stopping the Titans might be lost.

Plans are made to use Eren's Titan powers to seal the hole in the wall in an attempt reclaim Trost. But with the government's bloodstained history and vocal dissenters in the military ranks, the biggest threat to humankind may not be the Titans.

What begins as a simple training exercise turns into a disaster. A dysfunctional team of cadets must learn to work together after Christa is taken hostage by a group of brigands.

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