Tokyo 24th Ward

Shuta Aoi wanted to become a hero, but after a certain incident, he gave up that dream. One year later, that incident returns to haunt Shuta. In order to face his fears again, he needs to gather his two childhood friends together and reform the RGB. Given another chance, will Shuta be able to confront his despair?

Mari Sakuragi's family owns and operates the okonomiyaki restaurant in the Takara Shopping street. However, ever since the newly constructed Takara Mall was built, their business has been tough. The 24th Ward Gourmet Festival is just around the corner, and Mari wants to talk to RGB for some advise. However, the RGB boys have their minds already preoccupied with something else.

On the day of the 24th Ward Gourmet Festival, Mari and the RGB trio have done everything they can to prepare for the competition, but they find out that Yabusame has bought up all of the cabbage that they were planning to use for their okonomiyaki recipe.

A tornado hits the Gourmet Festival, and Kaba and many others become victims when a decision is made by RGB. Someone going by the name of Carneades has hacked into the 24th Ward network and left a mysterious message.

A bomb has been planted on a cruise ship, but RGB are presented with a trolley dilemma again. They have to choose between saving the lives of the VIPs on the ship or the suspected terrorists.

Following Koki's orders, Kunai is shot in order to stop the terrorist attack. With all eyes on DoRed, SARG goes after Ran, who is the leader of the organization.

Thanks to the KANAE system which has been in use for two months, the arrest rate has been going up. After Kunai's terrorist attack, Ran is now wanted as a material witness.

The person who instigated the Graffiti Wars was not Carneades but Ran's Mentor, 0th. Shuta hears from 0th about the whereabouts of Carneades, and hurries to the top floor of Cornucopia, but receives a call from Asumi.

The KANAE system was based on artificial intelligence that was developed by Kanae. In the past, the same AI was installed on a vehicle that got into an accident leaving 0th and Tsuzuragawa injured.

Tsuzuragawa is in a coma in the hospital after being saved by Shuta. While tensions grow between DoRed and SARG, Ran investigates what Tsuzuragawa was up to at Cornucopia. Ran meets with his mentor 0th, and hears about his new plan. Meanwhile, during the commotion in Shantytown, Shuta is unsure what to do. At that moment, he sees Kozue being pursued by SARG and goes after them.

The KANAE system has frequently been producing errors. The cause of these errors were due to Asumi's consciousness being awakened inside the system, which confused the system when it was making decisions. Shuta is unable to decide what to do when Tsuzuragawa presents a trolley dilemma to save Asumi. Chikuwa arrives on the scene and they are arrested as terrorist suspects. Meanwhile, Ran and...

When the RGB trio decides to go meet Asumi, they receive a call from her. Asumi presents to them a trolley dilemma that involves herself. They must decide between revealing Asumi's existence within the KANAE system which would lead to its collapse, or to fix the bug inside Asumi which would lead to everyone being controlled by the system. The trio are unable to make a choice between the two,...