"The Paper", agent of British Library Task Force) has supposedly gone missing, and Nenene Sumiregawa, her former student and best friend, is still in Tokyo after her parents moved to the United States.

After the initial action-filled adventure, the first several episodes take on the feel of an odd-couple comedy which focuses on tension between Nenene and the sisters, who move into her apartment and mooch off her, all while dealing with various crazies and psychos in their everyday lives.

The sisters also perform odd jobs as agents of the Dokusensha (ostensibly a Chinese publishing company, but more like an Illuminati-type organization focusing on the collection of rare and powerful documents).

[7] Events grow more serious as the series progresses as atrocities are committed by both sides, thrusting the main characters into the middle of a conflict between literary superpowers, the British Library and Dokusensha, who are both trying to collect ancient artifacts (books, of course) to control the entire world and even rewrite history.

After a horrific collision between the two superpowers, Nenene and the Paper Sisters set out to find the missing Yomiko to learn the truth about the conflict and save the world from literary terrorism.

Enoch Lau of THEM Anime Reviews argued that the series had a "refreshing concept" of an "ultra-cool" female protagonist as a bookworm, said it is like a "good mystery novel" with some filler episodes, and stated that Maggie reminded him of Sakaki in Azumanga Daioh.

Lau added that the paper fights are "cool", while praising the animation, art, detail, and character design, but criticized it occasional inconsistent pacing.