Set in the year 2019 in Japan. In order to crack down on free expression, a new law is passed, which allows for the government to create an armed force to find and destroy objectionable printed material. Meanwhile, to oppose this oppressive crackdown, the Library Defense is created. The Library Defense, including instructor Atsushi Dojo (Junichi Okada) and Iku Kasahara (Nana Eikura), work to protect the libraries. A fierce battle then ensues between these two groups.