Echika, burdened by her decision to hide the secret of Harold's Laws of Respect, experiences a rapid loss of Brain Dive functionality. With her prospects of being reinstated as a Diver looking grim, Echika is assigned to her next case as a normal police investigator, only to find Harold working the same inquiry with the help of a new "genius" assistant. From there, the two former partners chase separate leads after a hacker known only as E, a self-styled mind reader who has been leaking classified Interpol information on a popular message board. But what is this mysterious figure really after, and why are they inciting their followers to violence?