Jung Yerin is anything but a nerd. However when her beloved dongsaeng EunBi one day asks her to accompany her to a library she can't refuse her.

Who would've thought that at said library a mysterious tall girl kidnapps her beloved dongsaeng?

Can Yerin get the silent reader SinB to help her find EunBi?

Which role play the seemingly annoying brat Umji and her unnie who's none other than the beautiful school's student council president Kim Sowon?