"Attack on Titan The Movie: THE LAST ATTACK" is a compilation film that condenses the events of the second season of the "Attack on Titan" anime series. The narrative continues the struggle of humanity against the Titans, colossal humanoid creatures that have driven humanity to the brink of extinction. The remnants of humanity reside within massive walled cities, protected by towering walls that have kept the Titans at bay for over a century. However, the sudden appearance of the Colossal Titan and the Armored Titan breaches Wall Rose, reigniting the fight for survival.

The story focuses on the 104th Training Corps, particularly Eren Yeager, Mikasa Ackerman, and Armin Arlert, as they confront the escalating Titan threat. Eren, who possesses the ability to transform into a Titan, becomes a key figure in humanity's defense. The film highlights the discovery of the Beast Titan, a highly intelligent and enigmatic Titan capable of commanding others, and the revelation of other humans with Titan-shifting abilities, such as Reiner Braun and Bertolt Hoover, who are revealed to be the Armored and Colossal Titans, respectively.

As the Survey Corps investigates the Titans' origins and motivations, they uncover deeper conspiracies and the existence of a village of Titan shifters. The narrative builds tension as the characters grapple with betrayal, loss, and the moral complexities of their fight. Key battles, such as the defense of Trost District and the clash with the Female Titan, are depicted, showcasing the strategic and emotional stakes of the conflict.

The film culminates in a climactic confrontation as the Survey Corps faces the Beast Titan and its army of Titans. The story emphasizes themes of survival, sacrifice, and the blurred lines between humanity and monstrosity, setting the stage for the ongoing struggle in the series. The characters' development and the unfolding mysteries of the Titans' origins remain central to the narrative, driving the plot forward with intense action and dramatic revelations.