Several hundred years ago, humans were nearly exterminated by Titans. Titans are typically several stories tall, seem to have no intelligence, devour human beings and, worst of all, seem to do it for the pleasure rather than as a food source. A small percentage of humanity survived by walling themselves in a city protected by extremely high walls, even taller than the biggest Titans. Flash forward to the present and the city has not seen a Titan in over 100 years. Teenage boy Eren and his foster sister Mikasa witness something horrific as the city walls are destroyed by a Colossal Titan that appears out of thin air. As the smaller Titans flood the city, the two kids watch in horror as their mother is eaten alive. Eren vows that he will murder every single Titan and take revenge for all of mankind.
As Marley battles the Mid-East Alliance to end a four-year war, a group of Warrior candidates on the front lines compete to be the successor of the Armored Titan.
Though glad the war is over, both the Eldian Warriors and Marley brass realize that neither have a future unless they finish the job of retaking the Founding Titan.
Reiner reflects on his past, remembering what pushed him to become a Warrior and keep moving forward when all hope was lost.
A sudden visit from the Tybur family shakes up the Marleyan military. Meanwhile, Falco smuggles letters for a friend and helps two old comrades reunite.
While Willy Tybur reveals the truth in a shocking speech to the world, tensions rise behind the stage as Eren and Reiner meet face to face.
Eren's rampage is thwarted by the War Hammer Titan whose tenacity leaves him stumped. With Marley's military joining the fight, he'll be hard-pressed to survive on his own.
The forces of Paradis begin their assault, but the Warriors stand their ground. As Marley troops close in around them, Eren struggles to break the War Hammer's defenses.
With no Titans left to threaten their escape, the Scouts retreat on the airship. Determined to make them pay for trampling on her home, Gabi chases after with gun in hand.
As Paradis deals with the aftermath of the raid on Liberio, Armin looks back in the past to meeting the volunteer soldiers who reshaped their world.
Two years ago, Paradis welcomed their first visitor who was surprised to see one of their own. Obtaining their help will be critical in a three-part plan to protect Paradis.
Trapped on the world's most dangerous island, Falco and Gabi will do anything to survive. Elsewhere, the public demands answers when they learn the savior of Paradis has been detained.
While Hange and Pixis piece together Zeke's true intentions, tension builds outside HQ where Armin and Mikasa plead for permission to speak with Eren.
Gabi and Falco seek out a fellow Marleyan who's surprised to see Warrior candidates. The truth of what happened at Ragako may shed some light on Zeke's secret plans.
Armin and Mikasa speak with Eren, but are astounded by what he says. In the forest, Levi considers feeding the Beast Titan to someone new, but Zeke has other plans in mind.
A look into Zeke's past shows his struggle to become a Warrior. His plans to end the suffering of all Eldians stems from a chance friendship made in his youth.
With the Yeagerists now in charge, Zeke's master plan is revealed. But before it is put in motion, Eren recruits help to flush out any invaders in their midst.
Caught off guard by Marley's surprise attack, Eren fends off their Titans alone. As the battle rages on above, the Scouts consider Eren's motives from the underground dungeons.
The Beast Titan joins the fray, but General Magath is determined to take him down. Meanwhile, with the city in flames, Colt and Gabi rush to rescue Falco who's held captive by the Yeagerists.
Colt pleads with Zeke to not use his scream and turn Falco into a Titan. All the while, soldiers and Titans clash in battle as Eren struggles to make contact with his brother.
Zeke takes Eren through Grisha's memories to show him how he's been brainwashed. But in doing so, Zeke discovers something about Eren that he never knew.
For 2,000 years, the Founder Ymir has been waiting--a slave to those with royal blood. However, Eren's yearning for freedom gives her a choice that could shake things up.
With no walls left on the island and Shiganshina full of Titans, the Scouts must battle their former comrades. In the midst of it all, Gabi is determined to find and rescue Falco at whatever cost.
The rumbling is set in motion once all hardening is undone, but this also sets Annie free. As the Jaegerists take control of the island, Conny races towards Ragako to feed Falco to his Titan mother.
Upon reaching Ragako, Conny hatches a plan to trick Falco into being eaten by his mother. Elsewhere, hero of the Eldian Empire, Jean, is to execute Yelena and Onyankopon for their crimes against humanity.
Deep in the forest, an unlikely rabble of Marley stragglers and island fugitives attempt to set their hatred aside and talk around a campfire without killing each other.
The Azumabito's flying boat is guarded by a port full of Jaegerists, but the Scouts are reluctant to kill their former friends. If they wish to avoid bloodshed, they can't afford their plan to go wrong.
For the flying boat to take off, the mechanics need half a day to service it. Knowing they'll never last that long with Jaegerist reinforcements on the way, the crew is forced to change their plans.
Regardless of where it all began, Eren commits to his path of destruction during the Scouts' first visit to the Marleyan mainland, leaving Mikasa to wonder if things could've been different.