In a parallel Japan, the government struggles to handle the urban guerrilla called "Sects." To confront Sects' activity, the Metropolitan Police was organized, and its Special Armed Garrison "Tokki-tai: Kerberos" stood at the front line with their heavy arms. Although Tokki-tai achieved a triumph over Sects, people started to oppose their violent and bloody measures. Politically isolated, Tokki-tai made a final decision on their own fate...