The 11th planet has suffered tremendously at the hands of the Gatlantis fleet. As the closest potential responder, Yamato warps in to help.

After reinforcements are called to clean Maho's disastrous room, her and Okabe's Akihabara date ends with a surprising confession from Maho.

Lupin's gang is enjoying a peaceful New Years when he discovers a medal that brings back old memories, and starts reminiscing about past adventures. To steal the fortune of the Drug King Pablo, the gang heads to South America with Fujiko. As Fujiko distracts the target, Lupin picks off the remains of Pablo's guards while making his way through the jungle. He eventually makes it to Pablo's collection, but is surprised by what he finds.

The Rating Game is about to start, but Issei has things to figure out. He has formulated a guess as to why Rias is acting the way she is, but does he dare believe it? His girls give him courage. And, finally, their team steps out into the battlefield.

With the help of Gauche, Yami and Asta are able to defeat Licht. However, their victory is short-lived, as the three who call themselves the Third Eye appear and come to Licht’s aid.

As the fierce battle between the champion's Coalition of Volunteers and the Mass-Divers reaches its peak, Riku unexpectedly finds his way blocked by Ayame, who reveals the true reason why she joined Build Divers. This secret motive is deeply connected to her past.

With the church's requests fulfilled, things were supposed to go back to normal. But Elias has been acting strange since the last request: he'd vanished on the first morning after Chise had spent a night in his room. Neither Angelica's kind words nor Ruth's pure words are enough to put Chise's mind to rest.

Alice sees Elias' changes and decides immediately that he could never be human. Sorcerer Cartaphilius, who is attempting to capture the black dog by manipulating Renfred and Alice, causes Elias to show a completely different side of himself when his "work" hurts Chise. Those who know Elias call him the Pilum Murialis.

The dog, with its flowing, black hair and burning red eyes, called Chise by the name "Isabelle." The Church's final request is to investigate a black dog that emerged in a cemetetry, but the black dog ends up saving Chise from danger. Meanwhile, Renfred's apprentice, Alice, is also on the move, looking for the black dog.