The film begins with a mysterious incident known as the “Dragon’s Head Conflict” that occurred six years prior. The conflict involved a group of gifted individuals known as “The Guild,” led by the enigmatic and powerful villain, Fyodor Dostoevsky. The Armed Detective Agency, along with their former ally, Ryunosuke Akutagawa, managed to suppress The Guild’s uprising, but at a great cost.
In the present day, the Armed Detective Agency’s members find themselves facing a new crisis. An unknown Gifted individual named Tatsuhiko Shibusawa has emerged, wielding a unique ability that allows him to manipulate people’s memories. Shibusawa uses his power to orchestrate a city-wide massacre, driving people to commit suicide. This incident catches the attention of the Agency, and they begin investigating the matter.
During their investigation, the Agency discovers a connection between the Dragon’s Head Conflict and the current crisis. They learn that Shibusawa is somehow connected to Fyodor Dostoevsky and that his actions are part of a plan to resurrect The Guild and their leader. In order to stop this catastrophe, the Agency must uncover the truth behind the Dragon’s Head Conflict and prevent The Guild from rising again.
As the story unfolds, the Armed Detective Agency faces numerous challenges and confrontations. They encounter powerful enemies, such as the gifted individuals from The Guild, who possess dangerous and unpredictable abilities. The Agency’s members also confront their own personal demons and past traumas, making their mission even more perilous.
One of the key turning points in the film is when the Agency learns the truth behind the Dragon’s Head Conflict. They discover that Fyodor Dostoevsky’s ultimate goal is to create a world free from corruption, where gifted individuals no longer suffer. However, his methods involve sacrificing countless innocent lives. This revelation forces the Agency to question their own beliefs and values, leading to internal conflicts and emotional turmoil among the members.
In the climactic final battle, the Armed Detective Agency must confront The Guild and Fyodor Dostoevsky to prevent the resurrection of their organization. The Agency’s members, driven by their strong bonds and determination, unleash their full potential and engage in intense battles against formidable opponents. The fate of Yokohama and the lives of its citizens hang in the balance as the Agency fights to protect the city and bring an end to the cycle of violence.