After one hundred years of peace, humanity is suddenly reminded of the terror of being at the Titans' mercy.

A miraculous return is met with anger and fear. Cannons are fixed on Eren as he struggles to remember what happened to him inside the belly of a Titan and how he ended up as humankind's enemy. One question is all that matters: is Eren human or Titan?

Jean takes desperate measures to replace his broken Maneuver Gear. Meanwhile, Eren is able to seal 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 enormous.

A recap of events since the Fall of Shiganshina and the Battle of Trost.

A special military tribunal will decide Eren's fate. The Military Police calls for his execution while the Recon Corps 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 Recon Corps moves Eren to an old abandoned castle where he will continue his training. Hange 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 military branch they'll be joining, but after the harrowing events in the Trost attack, many are uncertain which branch to choose.

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.

As the Female Titan continues to tear its way through the Recon Corps, 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?

With the Female Titan still chasing after Levi's squad, Eren considers turning himself into his Titan form, but Levi tells him to choose to be either a monster or a member of the Recon Corps. As Eren remembers what he has learned from the squad, he realizes that the danger and sacrifice they all share is not what binds them — it is trust. Now it is up to Eren to make the decision of who he will trust.

With the help of Levi's squad, the Recon Corps has successfully captured the Female Titan. As Commander Erwin and Captain Levi begin preparations to extract whoever is inside the Titan, will the Recon Corps discover its true identity, or does the Female Titan have one last trick up its sleeve?

After a last act of desperation, the person inside the Female Titan has escaped from the Recon Corps and reverted to their human form. Now, disguised as a member of the Recon Corps and equipped with Maneuver Gear, they finally catch up to their prey — Levi's squad.

The Female Titan has captured Eren after ripping him out of his Titan body, but Mikasa and Captain Levi give chase. Elsewhere, the Recon Corps begins preparations for the journey back home to the Wall with their numerous dead in tow.

With the identity of the Female Titan now revealed, Eren has reservations about fighting her. Mikasa, Armin, and the rest of the Recon Corps try to fight the Female Titan, hoping to distract her long enough to buy Eren time to come to terms with his feelings.

Eren, spurred on by his promise to kill every single Titan, unleashes the full power of his Titan form in the fight with the Female Titan. As their bloody battle draws to a close, it seems humanity may finally have a chance at survival. However, with many mysteries still left unsolved, what will await Eren, Mikasa, and Armin?

Hange is insistent on capturing a Titan for the advancement of scientific research, but Erwin is adamant in his refusal to allow it. Will an unexpected discovery during an expedition beyond the walls alter the situation?

Erwin tries to change his appearance to appeal to cadets, Levi analyzes himself from another's point of view, and the graduation ceremony of the 104th Cadet Corps takes place.

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.

With the appearance of Titans within Wall Rose, Sasha and Connie ride as messengers to warn their villages of the impending threat.

Without a way to pursue the Titans, the Scouts have no choice but to recuperate as they wait for reinforcements. But do they still have faith in Eren?

The Scouts rally and charge in pursuit, but Reiner is not quite himself while the group is trapped in the giant forest until nightfall.

When their group finally flees, Ymir wonders whether she should lie or stay true to herself, even if it means ruining the lives and future of those she cares about.

The pursuit begins as the Recon Corps battles their way to Eren. But as the Scouts start to take numerous casualties, Erwin executes a risky strategy.

The battle continues as Eren and the Scouts face many hard decisions. Who is the real enemy? What is the war really about? And what will the future hold for mankind?

After barely surviving Eren's recovery, a rising threat from the shadows puts everyone's lives in danger again.

The Scouts take a stand against a new enemy, but it's not just Titans they'll be fighting anymore.

Historia and Erwin look back on their past, revealing a shady government with a hidden agenda and inspiration for an uprising.

On the run and running out of time, the Scouts must entrust their lives to others if they plan on surviving.

Erwin pleads his case for the Scouts to be spared, but an unforeseen announcement puts the fate of humanity at risk.

While sins of the past reveal new truths, both sides prepare for the upcoming showdown before they run out of time.

When everything falls apart, Eren must believe in himself to save his friends. But Eren alone may not be enough to stop the impending doom.

The survey corps and the wall garrison must protect the Orvud District from the impending attack of Rod Reiss' titan.

Kenny recalls the life which has brought him to death's door, but he gets to decide whether to live on or not.

The Scouts gather for a feisty feast before leaving to retake Wall Maria to uncover what's hidden in the basement once and for all.

The operation to retake Wall Maria commences in Shiganshina, the town where everything began. But when the Scouts arrive, something seems very wrong.

Against a rush of enemies, the Scouts scramble to defend their horses. But despite falling into a trap, they have their own surprise for the Armored Titan.

Though their Thunder Spears prove effective, the Scouts' celebration is short-lived as disaster descends upon Shiganshina.

While one front in the battle is rained on by flames, the other is battered by boulders. With no way out, the Scouts are forced to fight or die trying.

As Erwin’s heroic charge buys Levi time to confront the Beast Titan, Armin comes up with a plan of his own that lays it all on the line.

While picking up the pieces from the costly battle, tensions rise when deciding which of the wounded Scouts to use the single syringe on.

The Scouts reflect on all they have gained and lost in their mission. With their enemies gone, Eren and the Scouts finally enter the basement to uncover the truth that will change everything.