Humanity, under constant threat from the titans, built towering walls to shield themselves, living a harsh and confined life within their protection. One fateful day, an enormous titan breached the wall, shattering a century of fragile peace. Amid the ensuing chaos, a young boy named Eren Yeager witnessed the death of his mother and vowed to eradicate all titans. Determined, he joined the Survey Corps, dedicating himself to humanity's survival. Through his many life-or-death struggles, Eren discovered his ability to transform into a titan, using this newfound power to fight for humanity’s cause while uncovering the hidden truths of the world.

Over time, Eren ventured beyond the walls and chose a path that diverged from his comrades in the Survey Corps. He devised an unimaginably devastating plan, leading countless titans in a catastrophic onslaught to annihilate all life beyond the walls, a plan ominously named "The Rumbling." In a desperate bid to halt Eren's destructive intentions, his former allies, led by Mikasa and Armin, mustered their courage for a final, decisive battle to safeguard what remains of their world.