It has been one year since Diva's attack on the Red Shield Headquarters. Kai and the others stay with David's old comrade in the outskirts of London. Passing time brings various changes to everyone. But again, the Chiroptera overshadow the streets of London...

Kai at last is reunited with Saya, but the girl faints from exhaustion. Kai brings Saya to Glay's home to take care of her, but the enemy is again lurking in the darkness ready to attack...

Assisted by Okamura and Mao, David locates the Goldsmith and Cinq Fleches joint-venture lab in the outskirts of London. Meanwhile, Saya and Hagi discover that Diva is going to perform at the Royal Opera House in London. They sneak into the opera house, but...

Saya is invited to a birthday party for Javier, one of Glay's children. But once at the party, Saya feels that she does not belong there after all. As Kai and all others care for Saya, who has shut her mind from them, Carl closes in on Glay's residence with Corpse Corps. And his distorted love for Saya forces him to yet further insanity...

After the battle on Christina Island, Saya and Kai returns once to Glay's residence in London. Javier and Nahabi insistently ask them to go fishing together. In the peaceful countryside, Saya enjoys some time out to relax. Meanwhile, David and Joel attend a party. Their aim is to meet the host of the party, Amshel...