After 100 years of peace, humanity is suddenly reminded of the terror of being at the Titans' mercy.
After the Titans break through the wall, the citizens of Shiganshina must run for their lives. Those that do make it to safety find a harsh life waiting for them, however.
Eren begins his training with the Cadet Corps, but questions about his painful past overwhelm him. When he struggles with a maneuvering exercise, Berholt and Reiner offer kindly advice.
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 memory of Eren testing out his Titan powers sheds new light on how his abilities work. As the Female Titan continues to slaughter members of the Scout Regiment, Eren is faced with a difficult decisions: does he trust his teammates or act out on his own?
The Female Titan has been captured, and it's Erwin's goal to find out who the human is lurking inside it. Meanwhile, the Scouts realize that the reason Levi told no one about their true mission outside the wall is because there is a spy among their ranks.
When the identity of the Female Titan is finally revealed, she goes on a rampage within Wall Sina. Eren is hesitant to fight her, but Armin and Mikasa throw themselves into of the battle in a desperate attempt to stop the towering monster.
Eren goes head-to-head with the Female Titan in a fight that demolishes the Stohess District inside Wall Sina. As the number of casualties skyrockets and Annie tries to escape over the wall, Erwin must deal with the consequences of his plan.
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