Set in the late 21st century, an MRI scanner is introduced at the National Research Institute of Police Science's 9th Forensics Laboratory. The machine is able to scan the memories from even the deceased. As ethical questions arise over the machine's use, the 9th Forensics Laboratory members, including rookie Ikko Aoki and Chief Tsuyoshi Maki, struggle to solve cases.

The story takes place five decades from now, when brain scanners have been perfected to the point that the government can retrieve up to five years' worth of memories from people's minds — even if they are dead. The investigators of the National Research Institute of Police Science's 9th Forensics Laboratory must weigh the ethical choices in the ultimate invasion of privacy as they delve into people's minds to solve crimes. Everyone has a secret in his mind. Following Maki, the leader of the group, and Aoki, a newcomer, the anime shows the agonies of the investigators who have to know these secrets unwillingly.

The film is a key film project for the 100th anniversary of the founding of the Party by the Propaganda Department of the Guangdong Provincial Party Committee, revealing the unknown revolutionary party history of Shantou Red Transportation Station. The film tells the story of a group of unsung heroes in Shantou who, during the period of the Agrarian Revolution, fought against the enemy with their blood and lives in the revolutionary struggle