After a severe test, Yuku Asahara (played by Nai Rongkura) has gradually grown into an excellent member of the library task force. After the war of guarding the Otahara library, she seems to finally find that his Royal Highness, who has been here for many years, is the instructor who often has a smelly face (acted the role of Junichi Okada). One day, Yu's parents paid an unexpected visit, and she was in a hurry because she never told them about her real job. Nakazawa Nakazawa, a girl who is sick and deaf (Toya Taifeng) has been secretly in love with Xiao Mu Gan, like his elder brother (Kyu Tanaka) for many years, but Xiao Mu was arrested after being accused by the good team of spreading books harmful to physical and mental health to the disabled. On the other hand, a museum researcher named Chaobinaiji (Aoji Nakamura) approaches pockmarked Shibataki (Qianming Kuriyama), and there is another intention behind his kind smile. Shengguang (Fushi Cangjie) receives mysterious phone calls one after another, and the caller is in control of the future fate of the book team. This film is based on the original work of you Chuan Hao.