A terrorist attack has taken place at the
Tsuruga Nuclear Power Plant, resulting in the swift passage of an
anti-terrorism bill that gives the Media Betterment Committee (MBC) and other agencies additional jurisdiction. While on a date, Iku Kasahara and Atsushi Dojo are called back to the Kanto Library Base to protect Kurato Tōma, the author of
Nuclear Peril which has a plotline similar to the recent terrorist attack and who is currently a wanted man by the MBC. After purchasing eyewear as part of Tōma's disguise, Kasahara and Dojo encounter Kiyoka Kojima, a bookstore staff who was also saved by Dojo in the past. The Library Defense Force (LDF) files a lawsuit, with Tōma as the
plaintiff, against the MBC at the
Tokyo District Court. The court rules in favor of the plaintiff, causing the MBC to file an
appeal at a
high court. One night, members of the Future Library Committee attempt to abduct Tōma but are apprehended by Mikihisa Komaki and Hikaru Tezuka. Asako Shibasaki then tells Hikaru that she is going to deal with his brother Satoshi. Tōma is moved from the Kanto Library Base to Kazuichi Inamine's estate. Meanwhile, Shibasaki proposes to Satoshi to become the voice of anti-censorship in the
National Diet in exchange for her overlooking his recent plot to abduct Tōma. A few days before the high court's verdict on the appeal, MBC agents infiltrate Inamine's estate, but Kasahara and Dojo manage to bring Tōma back to the Kanto Library Base. On the day of the verdict, the high court rules in favor of the appeal, resulting in the lawsuit being brought to the
Supreme Court of Japan. During a meeting, Kasahara suggests Tōma seek asylum, which is then approved by the LDF as a last resort if they fail to win the lawsuit. On the day of the verdict, the Supreme Court rules that Tōma is to be prohibited from writing for five years. Kasahara, Dojo, and other members of the LDF attempt to transport Tōma to the Dutch embassy, but they are blocked by the MBC. Kasahara, Dojo, and Tōma proceed on foot toward the American embassy, during which Dojo gets shot in the leg by an MBC agent. Dojo is brought to Kojima's workplace at the
Books Kinokuniya store to recuperate, while Kasahara and Tōma proceed to the consulates found in
Osaka. On their way, Tōma tells Kasahara that he is going to write a fairy tale about a
troubadour being saved by two bluebirds from oppression to perform music that is not approved by a king. Kasahara and Tōma arrive near the British Consulate-General, but they are caught by MBC agents. The LDF arrives after receiving Kasahara's coded message about their location, giving her and Tōma time to proceed next to the American consulate, where they are blocked by MBC's huge reinforcements. As the two are about to get caught, a diplomat from the British consulate arrives to save Tōma and accept his asylum after receiving a call from the LDF. The recent incident has garnered the attention of the international community, condemning the Media Betterment Act. One week later, Kasahara visits Dojo in a hospital, where they affirm their love. A year after the revision of the act prohibiting the use of weapons, Kasahara, now married to Dojo, overlooks the recruits in the LDF as their instructor. ==Voice cast==