One of the directors of Academy City, Shiokishi, reveals himself as the "man on the phone" who contacts GROUP, and once more assigns the four, this time involving the remaining affiliates of Spark Signal still scattered across Academy City. Meanwhile, Saiai and Shiage's plans for Takitsubo Rikou's party turns into a movie "date", followed by Saiai going out for her newest job involving the remnants of Spark Signal. Saiai returns after meeting the same people she treated as enemies during the battle royale not long ago, and eventually coaxes Shiage into tagging along for the job.