For generations, humanity has lived in fear of colossal Titans, ominous creatures that prey on them. The construction of colossal walls—Maria, Rose, and Sheena—ensured a century of peace until the Colossal Titan and Armored Titan breached Wall Maria, plunging humanity into chaos. Behind Wall Rose, Eren Yeager and his peers from the 104th Training Corps transition into full-fledged Survey Corps members. As they gear up to confront the Titans once more, their plans are disrupted by a sudden breach of Wall Rose, unveiling unexpected truths. Amidst the chaos, the Survey Corps races to defend their territory, unearthing the enigmatic nature of the invading Titans and the hidden secrets harbored by their own comrades.