In Japan 202X, the Great Depression after the Tokyo Olympic Games and the deterioration of security, criminals have increased dramatically in Japan. Prison will be privatized, the death penalty will be abolished, thugs will be sentenced to life imprisonment.Rio Wakamura (Yuka Kuramochi), an excellent detective, was arrested as a terrorist who blew up the nuclear power plant and was sentenced to life imprisonment. One day, she was transferred to another prison. The prisoners gathered there were only famous thugs such as former idols, former professional wrestlers, president of girls' gangs, pleasant criminals, and so on.The prison was called "castle of the beast" and it was a place where you can not live and get out.The escape impossible · The survival rate 0%, the fight of the women in the extreme state began!