Weighed down by her decision to hide the secret of Harold’s Laws of Respect, Echika experiences an abrupt decline in Brain Dive ability. With her prospects of being reinstated as a Diver looking grim, Echika tackles her next assignment as a general investigator, only to find Harold working the same case with the help of a new “genius” assistant. From there, the two former partners chase separate leads after a hacker known as E, a self-proclaimed mind reader who has been leaking classified information from Interpol onto internet message boards. But what is this mysterious figure really after?