After transitioning into full-fledged members of the Survey Corps, Eren Yeager and his comrades from the 104th Training Corps gear up to confront the Titans anew. However, their Titan-battling preparations are disrupted by an unexpected breach of Wall Rose. Amidst the chaos, startling revelations emerge, unveiling a web of enigmatic truths. With the urgency to protect the wall mounting, the Survey Corps delves deeper into the Titan invasion, unearthing not only the mysteries surrounding the formidable foes but also the shadowy pasts of their very own allies.