The action takes place in the not so distant, but much more tech 2013. The main character - a boy of Zion, whose whole life was brought up as a representative of the supreme elite, just lives in No.6 area, we can say, the top area rayone-suite. However, in his twelfth birthday, he manages to save some kid, who calls himself Nedzumi ("Rat") and escaped from under the supervision of urban areas Increased Protection. And of course, as you might guess, Zion`s life is now changed forever... light novel No. 6 Atsuko Asano.