Kiba becomes entrenched in battle against Karlamine, one of Riser's knights, while Akeno fights Yubelluna, his queen. Meanwhile, Issei takes on Ravel and the other remaining pieces. Rias launches an all-or-nothing sneak attack against Riser.

The Kuoh Academy students fight Kokabiel and his minions to defend their school and their town.

Time stops during the Leaders' Summit, and Issei and the others meet a new enemy.