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 created 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.
The plan to reclaim Trost falls apart when Eren's newfound powers turn him into a mindless giant. As Titans continue to swarm the city, it's up to Armin and Mikasa to make sure the cadets massacred during the mission haven't died in vain.
Jean takes desperate measures to replace his broken maneuvering device. Meanwhile, Eren is able to plug the hole in the wall thanks to the help of his fellow cadets, but the cost of humanity's first victory against the Titans will be gigantic.
A special military tribunal will decide Eren's fate. The Military Police calls for his execution while the Scout Regiment argues that he is a powerful resource for humankind, and Mikasa is put on the spot when asked about the events of the Trost mission.
Everyone is a suspect in the investigation to find out who killed the two test-subject Titans. Meanwhile, the Cadets pick which corps they'll be joining, but after the harrowing events in the Trost attack, many are uncertain which branch to choose.
As the Scout Regiment 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.
As the Female Titan continues to tear its way through the Scout Regiment, Levi makes a bold decision to split the ranks and send Eren and the supply wagons through a huge forest. Is his strategy genius, or does is spell certain death for the scouts?