Eren begins the fight with Reiner Braun, The Armored Titan, by striking him as Mikasa watches and regrets not being able to cut off Reiner and Bertolt's heads. On top of the wall Bertolt, The Colossal Titan, fights with the Survey Corps. He eventually grabs Ymir, along with another soldier, and drops them into his mouth. The scouts try to fight him but are pushed back by the steam released from his back and Hange orders everyone to wait until Bertolt can no longer produce steam as they can not attack him otherwise. Connie and Historia help rescue soldiers and Historia expresses fear for Ymir as Connie does the same for Reiner and Bertolt, not knowing they're the Titans. Meanwhile, Eren lies on the ground, regenerating his hand and part of his head. He remembers how trust Reiner and Bertolt were and realises that Reiner had been going easy on his during their hand to hand training. He notes that they have caused the most pain in the history of man kind as he remembers the fall of Wall Maria. Angry, Eren steps up and punches Reiner in the face, only to receive another crushing blow back from him.
Eren punches Reiner in the face while descending, hitting his head against the Wall. Mikasa observes this and regrets not having cut Reiner and Bertolt's heads off when she had the chance and wonders why she wasn't able to do it. She knows that she won't get an opportunity to do that again. The Colossal Titan swings his hand over the wall, breaking part of the top of the wall and forcing the soldiers to jump off it. He manages to capture Ymir in one hand and a soldier in another and throws both of them into his mouth as Connie, Hange, Historia, and Armin are shocked. Hange directs their soldiers in an attempt to finally bring down the Colossal Titan. All of the squadron members charge all at once. Bertolt tries to defend himself but his movements are slow and the soldiers evade him easily. They direct themselves towards the nape of his neck to slice it off, but he immediately releases a burst of hot steam which throws them off and thwarts their attempt, burning them and making them retreat. Armin notes that because of the high pressure wave of steam, they won't be able to attack him without being burned. Hange orders Squads 2, 3 and 4 to remain on standby near the Colossal Titan so that they can kill it when it stops releasing steam while Hange, Armin and Squad 1 take care of the Armored Titan. At a distance, Connie, Historia, and some other soldiers feel the heat of the steam and start taking care of the wounded and the burned. Historia express her worry for Ymir and begs for a way to save her while Connie asks for help for Reiner and Bertolt because they did not have the Three Dimensional Maneuver Gear, unaware that they are the enemy.
Meanwhile, Eren has been punched and knocked to the ground by the Armored Titan with his head and his hand wounded, which are starting to regenerate. He realizes that Reiner had been holding back on him during their hand-to-hand practice fights in their trainee days. Eren remembers how they were so calm and that they were considered trusted friends by everyone. He reminisces how he wanted to become strong like him and becomes disgusted with Reiner's face overflowing with justice. Eren admits that they are the people that had caused the most harm and pain in the history of mankind, while he remembers the day when Wall Maria was beached. Mikasa notes that her blades were useless against him, just as they were against The Female Titan, but this time the Titan's whole body is hardened and Eren's attacks also seem ineffective on him. Reiner heads towards Eren as he picks himself up, fully regenerated, and attacks him with a powerful punch at his face. Reiner punches him in return, again, this time obliterating half his head and making him lose balance.