The protagonist of this work, Wasteland Du, was rescued by a librarian in a bookstore in high school. Because of this opportunity, her job wish is to become a librarian. This story is mainly about her daily life as a librarian.

The story begins with Yu's hard training as a new librarian. In middle school, her track and field is her strength. Although she is a girl, she has achieved results that are not lost to boys. Therefore, now the instructor is also very strict with her in class. I only want to bite the instructor like a puppy. In fact, the department that Yu wants to enter is a defender with fewer female players. However, it was assigned to the book special forces that even the guardians were looking forward to. Why?

At the same time, they were also assigned to this special unit, such as Osamu Tezuka, instructor class, Xiao Mu, Tian Xuan and others. The team launched a series of slapstick actions around it. However, what will happen?

Although the library gives people the impression that it is quiet and cultural, this concept has been subverted in this work, and it has become a fighting place where gunshots and roars are intertwined. The author skillfully combines the two together, which makes people have a strong interest in the story and hopes that animation can perfectly show the essence of the story.