Eren's got a lot of explaining to do.
After the retreat bell sounds, many cadets find themselves without enough fuel to scale the wall back to safety. Mikasa begins to lose hope once she hears of the deaths in Armin's squad, but the appearance of a new type of Titan stokes her will to fight.
Armin comes up with a risky plan that pits Titan against Titan as the abandoned Cadets attempt to take back their headquarters. Getting into the building might be possible, but getting out alive and refueled will mean facing more of the giants.
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.
The Scout Regiment moves Eren to an old abandoned castle where he will continue his training. Hanzi 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.
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 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 it spell certain death for the scouts?
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.
A traitor has infiltrated the Scout Regiment, destroying their ranks from within. When cornered, she once again takes the form of the Female Titan—but this time, Eren's not going to let her get away without one insanely brutal fight.
After watching Eren get swallowed by the Female Titan, Mikasa and Levi follow the brutal monster in the hopes that he's still alive inside her. As the Scout Regiment tries to recover from the devastating losses of the operation, emotions run high.
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