The black dots raining down on Duomo lead to everyone fleeing, including Atlas security and military. After the attacks stop, Kuniko and the other Metal Age members perform a search and rescue operation of Duomo's residents. Lady Ryoko is furious on the unknown attack and Leon, one of her men, volunteers to bring a team to investigate the source. Meanwhile, Kuniko, Momoko and Takehiko decide to investigate as well, at the place the attacks supposedly originated from: Ikebukuro. Their team wears protective gear to protect from the dense oxygen and poisonous swamp gas. Karin works with several of her peers to control investments and economy of other countries. However, she goes into a bad mood when one of her peers posts a presumably sarcastic remark. Mikuni punishes one of her retainers for lying by killing her with her psychic powers. Kuniko's team encounter a military squad sent into the Ikebukuro jungle to investigate. They are discovered by Kunihito and flee. Kuniko ambushes Kunihito and interrogates him on the military's presence, and the resonance of their sacred blades. Kunihito claims not to know anything and Kuniko escapes. Ryoko's men find that the artillery attack emitted no carbon dioxide, leading them to wonder if it's nature's punishment on them. Atlas begins the regular ballot to allow Duomo residents to live in the city and Miiko is one of the chosen. Ryoko gets an audience with the lord of Atlas, telling him that the seals have resonated.

Kuniko, Kunihito and Momoko go after Mikuni, who is about to make herself successor of Atlas. Kunihito distracts the guards with gunfire while the other two head in Mikuni's direction. Momoko fights off Sayoko, who attempts to stop them from reaching her mistress, leaving Kuniko to chase after the girl. Kuniko reaches Mikuni and tells her that she can be the successor, but all she wants is to activate the Zeus defense AI, but Sayoko knocks Kuniko down and tells Mikuni to keep moving. Mikuni reaches Ryoko and is told to present the three blade seals to her, though the girl have doubts due to Kuniko's explanation. However, Mikuni is told by Ryoko that she can only be successor if she gets rid of Sayoko. Even though Mikuni doesn't want to, Sayoko sacrifices herself by jumping to her death in order to make her the successor. When Mikuni and Sayoko enter the ceremonial hall, Kuniko grabs Mikuni with her and tells her that all she needs is to speak with Zeus. Upon interacting with a weird device which is used to activate Zeus, Kuniko realizes that Zeus cannot be controlled as she's not the successor. Ryoko reveals herself to be Zeus' avatar, and she easily beats down Kuniko. Despite Kuniko's pleas, Mikuni pushes ahead to destroy the world to avenge Mi-ko's death. When Kuniko tells Ryoko she will stop them, Kunihito appears, pointing his weapon at her.