In 2024, the kidnapping of the president of the MM manufacturing company "Serano Gene Hybrid" occurred. The murderer who appeared at the scene of collecting the ransom actually escaped after leaving an image of his face with a smiley face logo on all surveillance records. Six years after the incident, the ingenious trap of the "Smiling Man" reappeared in the online society... The long-sealed Smiling Man has awakened, and the peak showdown between the Special A-level hacker and Section 9 is about to begin!