In the aftermath of the 57th Exterior Scouting Mission, Annie Leonhart lives a quiet life in Stohess District as a new recruit in the Military Police Brigade. There she reunites with her friends but comes to a chilling realization: the Scout Regiment has discovered that she is the Female Titan, and this time they will not let her escape.
|23|| Smile: Assault on Stohess, Part 1|
|September 14, 2015|
| In the Stohess District of Wall Sina, the Military Police are ordered to escort the Scout Regiment convoy once they enter the capital. To Marlo's disgust, the Military Police are shown to be lazy and corrupt. He reveals he joined the Military Police so he could reform it to become a better organization. Once the convoy has entered Stohess, Armin calls out to Annie from the alleyway. He tells her their plan to help Eren escape the capital. When she questions him for more details he reveals the one riding in the convoy is actually Jean in disguise. She refuses at first but after Armin begs again, revealing that Eren may be killed, she finally agrees.
Armin then leads the group to an underground tunnel. However, Annie refuses to enter as she has noticed Armin's strange behavior and the hidden Scout Regiment members watching her. Armin finally reveals he suspects Annie is the Female Titan, since the omni-directional mobility gear she had after Sawney and Beane were killed is Marco's, and the Female Titan did not kill him during the last expedition. Eren and Armin beg Annie to prove them wrong by following them, but knowing her identity is exposed, she laughs sadistically and transforms using the hidden blade in her ring.
|24|| Mercy: Assault on Stohess, Part 2|
|September 21, 2013|
| Days before Eren is escorted to the capital, he is told by Erwin and Armin that they have a plan to capture the person they believe to be the Female Titan and is shocked when they tell him it is Annie. Back in the present, Eren, Armin and Mikasa manage to escape a collapsing tunnel while being hunted by the Female Titan. Eren tries to transform but is unable to which Mikasa suspects his feelings for Annie is preventing him. When another tunnel collapse traps Eren, Mikasa and Armin distract the Female Titan away from Eren.
Meanwhile, Commander Nile Dawk of the Military Police demands an explanation from Erwin on what is going on as his men hold him on gunpoint. As Mikasa and the rest of the Scout Regiment distract and tries to capture the Female Titan, Armin and Jean try to free Eren from the rubble. Armin tells Eren he has to fight Annie as anyone who refuses to sacrifice anything can never change anything. As Eren thinks about what Armin said, he remembers his hatred for the Titan who killed his mother. Eren finally transforms into the Power Titan and delivers a fearsome blow to the Female Titan.
|25|| Wall: Assault on Stohess, Part 3|
|September 28, 2013|
| As a shrine inside the Stohess District gets crushed during the ongoing battle of Eren Jaeger and Annie Leonhart, a minister watches the Titans reaching the Walls, much to his horror. Eren and Annie find themselves in a fight yet again, with the former questioning the latter's motives. Meanwhile, Erwin continues facing Nile Dawk as the Military Police Brigade Commander blames him for the city's destruction. Eren and Annie exchange blows, until Annie, reminded of her past, delivers critical strikes. However, Eren, remembering his goal, recovers at an extremely fast pace and charges at Annie with great power.
In spite of his efforts, Annie reaches the Wall and begins climbing it in order to escape. Mikasa does not let this happen as she quickly cuts off Annie's fingers. Annie falls and on the ground, Eren just barely stops himself from devouring Annie, with the latter encasing herself in a crystal afterwards. The soldiers soon learn that they cannot get any information while Erwin is questioned about his actions. Meanwhile, Eren judges his actions in the battle, with Mikasa accompanying him as Armin and Jean discuss the needed sacrifice.