The Survey Corps is framed as traitors by the Interior Police and hunted through the underground passages of the capital. Rod Reiss, the true king of the walls, reveals that his family has manipulated humanity's history for generations using the Founding Titan's power. Historia Reiss is forced to confront her royal heritage and her father's plan to have her eat Eren to reclaim the Founding Titan. Kenny Ackerman, the leader of the Interior Police, reveals his connection to Levi as Levi's uncle and mentor. Historia ultimately rejects her father's manipulation and frees Eren, choosing her identity as a Yeager ally over her Reiss bloodline. The arc concludes with the Survey Corps taking control of the government and establishing Historia as the rightful Queen of Paradis.
The Survey Corps is branded as enemies of humanity and forced into hiding while the Interior Police systematically hunt them down with overwhelming force. Levi fights Kenny Ackerman in a brutal underground showdown, learning that Kenny was his mother's brother and trained him as a killer. Rod Reiss feeds his daughter Historia a Titan serum with the intention of having her consume Eren and inherit the Founding Titan's power. Historia rebels against her father's plan and instead helps Eren escape, embracing her identity as the illegitimate child who chooses her own path. Rod Reiss transforms into an abnormal Titan of immense size and is defeated by the Survey Corps with Historia landing the final blow. Historia is crowned Queen of Paradis and grants the Survey Corps full authority to investigate the truth of the world.
The Uprising Arc dismantles the false history of the walls and reveals that the Reiss family and the First King have controlled humanity through memory manipulation for a century. It completes Historia's character arc from a self-hating outcast to a decisive ruler who chooses her own destiny. The arc introduces the concept of the Founding Titan's power and its limitations, specifically that the royal family's will can override any inheritor's intentions. This arc shifts the story's focus entirely from Titan combat to political intrigue, setting up the revelations about the outside world that follow.