This is a world where a weird virus of Gastrea tortures people. Infected victims are isolated from a safe land, exist in suffering and face sadism every day in a dark space.
The Japanese authorities attempt to overcome Gastrea. Rentaro situates in Tokyo and works in Civil Security. He elaborates on new methods of beating the virus. His cooperator Enju is a young but brave lady. They are ready to serve their homeland and take responsibility for peace. Rentaro and Enju became the only hope for citizens. They obtain a requirement from the country that asks to save Tokyo.
Partners start working on the secret plan as they have no choice. The crazy chase will take place… Right now!