Humanity remains trapped within two walls, still threatened by the Titans that deprive them of their freedom. Despite efforts to eliminate the Titans, dangers arise both outside and inside the walls. Eren Yaeger, rescued from the Colossal and Armored Titans, focuses on honing his Titan powers. Meanwhile, Krista Lenz grapples with the loss of a friend, and Captain Levi taps Eren and his comrades to join his personal squad. As Commander Erwin Smith recuperates, the government seizes Eren and Krista, alarmed by the Survey Corps' recent feats. Levi and his new squad must outsmart their pursuers, who include someone from Levi's past, in order to safeguard Eren and Krista from harm. Alongside the monstrous Titans, Eren and the other soldiers must confront the cunning machinations of their human enemies to survive.