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

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.

Reiner reflects on his past, remembering what pushed him to become a Warrior and keep moving forward when all hope was lost.

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.

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.

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.

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.

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.