The story begins with Kiba fighting Freed who was using one of the Excalibur fragments until Freed retreats from the fight. The next morning, Issei wakes up shocked that Rias and Asia are sleeping naked beside him. After the two left, Ddraig suddenly started talking with Issei, telling him about the "Vanishing Dragon", Albion. Meanwhile on her way to school with Tsubaki, Sona notices two figures standing outside the school gate and the Holy Sword that one of them is wielding. Later at the Occult Research Clubroom, Issei notices that Kiba is missing and asks Rias about Kiba's past where she revealed that Kiba was previously part of "Project Holy Sword", where he was one of the failed products that escaped before he could be disposed of until Rias found him on the verge of death. Akeno then arrives at the clubroom with Sona and Tsubaki as she asks Rias out to discuss about the two people she met earlier. Issei and Asia who were heading home then senses something amiss in his house and rushed back home to find two girls talking to his mother, and to the latter's surprise, one of them is his childhood friend, Irina Shidou. Issei is then seen fishing with his client from the previous episode. The next day, Xenovia and Irina arrive at the Occult Research Club to tell Rias and her peerage about their purpose of them being there: to retrieve the stolen Excalibur swords and a warning to them to not interfere in their jobs. While leaving, Xenovia notices Asia who was previously known as the "Holy Maiden" before being exiled as a "Witch", insulting her for becoming a Devil. As Xenovia further insults Asia, even attempting to exorcise her, Issei intervenes and challenges the girls with Kiba following in pursuit. The episode ends as the four begin their battle.